diff --git a/Rakefile b/Rakefile
index 7da7cd93fb..bf2878b98f 100644
--- a/Rakefile
+++ b/Rakefile
@@ -160,7 +160,14 @@ begin
     t
   end
 
-  task :default => [:spec]
+  task :default do
+    STDERR.puts """
+      Running core, model, bin, plugin and core_ext specs.
+      Run other specs manually with rake {spec_integration,spec_sqlite,spec_postgres,spec_mysql}.
+    """
+    [:spec, :spec_bin, :spec_plugin, :spec_core_ext].each {|t| Rake::Task[t].invoke }
+  end
+
   spec_with_cov.call("spec", Dir["spec/{core,model}/*_spec.rb"], "Run core and model specs"){|t| t.rcov_opts.concat(%w'--exclude "lib/sequel/(adapters/([a-ln-z]|m[a-np-z])|extensions/core_extensions)"')}
   spec.call("spec_bin", ["spec/bin_spec.rb"], "Run bin/sequel specs")
   spec.call("spec_core", Dir["spec/core/*_spec.rb"], "Run core specs")
diff --git a/spec/core/dataset_spec.rb b/spec/core/dataset_spec.rb
index 96a92423ed..3d192844ce 100644
--- a/spec/core/dataset_spec.rb
+++ b/spec/core/dataset_spec.rb
@@ -1609,10 +1609,10 @@ def d.to_s; "adsf" end
   specify "should raise an error if an invalid limit or offset is used" do
     proc{@dataset.limit(-1)}.should raise_error(Sequel::Error)
     proc{@dataset.limit(0)}.should raise_error(Sequel::Error)
-    proc{@dataset.limit(1)}.should_not raise_error(Sequel::Error)
+    proc{@dataset.limit(1)}.should_not raise_error
     proc{@dataset.limit(1, -1)}.should raise_error(Sequel::Error)
-    proc{@dataset.limit(1, 0)}.should_not raise_error(Sequel::Error)
-    proc{@dataset.limit(1, 1)}.should_not raise_error(Sequel::Error)
+    proc{@dataset.limit(1, 0)}.should_not raise_error
+    proc{@dataset.limit(1, 1)}.should_not raise_error
   end
 end
 
diff --git a/spec/core/schema_spec.rb b/spec/core/schema_spec.rb
index f67b738bc0..516f22a7c5 100644
--- a/spec/core/schema_spec.rb
+++ b/spec/core/schema_spec.rb
@@ -446,7 +446,7 @@ def @db.supports_named_column_constraints?; false end
     meta_def(@db, :execute_ddl){|*a| raise Sequel::DatabaseError if /blah/.match(a.first); super(*a)}
     lambda{@db.create_table(:cats){Integer :id; index :blah; index :id}}.should raise_error(Sequel::DatabaseError)
     @db.sqls.should == ['CREATE TABLE cats (id integer)']
-    lambda{@db.create_table(:cats, :ignore_index_errors=>true){Integer :id; index :blah; index :id}}.should_not raise_error(Sequel::DatabaseError)
+    lambda{@db.create_table(:cats, :ignore_index_errors=>true){Integer :id; index :blah; index :id}}.should_not raise_error
     @db.sqls.should == ['CREATE TABLE cats (id integer)', 'CREATE INDEX cats_id_index ON cats (id)']
   end
 
@@ -965,7 +965,7 @@ def @db.supports_named_column_constraints?; false end
   specify "should ignore errors if the database raises an error on an add_index call and the :ignore_errors option is used" do
     meta_def(@db, :execute_ddl){|*a| raise Sequel::DatabaseError}
     lambda{@db.add_index(:cats, :id)}.should raise_error(Sequel::DatabaseError)
-    lambda{@db.add_index(:cats, :id, :ignore_errors=>true)}.should_not raise_error(Sequel::DatabaseError)
+    lambda{@db.add_index(:cats, :id, :ignore_errors=>true)}.should_not raise_error
     @db.sqls.should == []
   end
 
diff --git a/spec/extensions/caching_spec.rb b/spec/extensions/caching_spec.rb
index d1ce40648a..6bf1362a3e 100644
--- a/spec/extensions/caching_spec.rb
+++ b/spec/extensions/caching_spec.rb
@@ -125,12 +125,12 @@ def self.name; 'SubItem' end
     m = @c.new
     proc {m.cache_key}.should raise_error(Sequel::Error)
     m.values[:id] = 1
-    proc {m.cache_key}.should_not raise_error(Sequel::Error)
+    proc {m.cache_key}.should_not raise_error
 
     m = @c2.new
     proc {m.cache_key}.should raise_error(Sequel::Error)
     m.values[:id] = 1
-    proc {m.cache_key}.should_not raise_error(Sequel::Error)
+    proc {m.cache_key}.should_not raise_error
   end
   
   it "should not raise error if trying to save a new record" do
diff --git a/spec/extensions/hook_class_methods_spec.rb b/spec/extensions/hook_class_methods_spec.rb
index 45de3bf8ce..a59892ffba 100644
--- a/spec/extensions/hook_class_methods_spec.rb
+++ b/spec/extensions/hook_class_methods_spec.rb
@@ -184,7 +184,6 @@
 
   specify ".create should cancel the save and raise an error if before_create returns false and raise_on_save_failure is true" do
     @c.before_create{false}
-    proc{@c.load(:id => 2233).save}.should_not raise_error(Sequel::ValidationFailed)
     proc{@c.create(:x => 2)}.should raise_error(Sequel::BeforeHookFailed)
     DB.sqls.should == []
   end
@@ -215,7 +214,6 @@
 
   specify "#save should cancel the save and raise an error if before_update returns false and raise_on_save_failure is true" do
     @c.before_update{false}
-    proc{@c.load(:id => 2233).save}.should_not raise_error(Sequel::ValidationFailed)
     proc{@c.load(:id => 2233).save}.should raise_error(Sequel::BeforeHookFailed)
     DB.sqls.should == []
   end
@@ -254,7 +252,6 @@
 
   specify "#save should cancel the save and raise an error if before_save returns false and raise_on_save_failure is true" do
     @c.before_save{false}
-    proc{@c.load(:id => 2233).save}.should_not raise_error(Sequel::ValidationFailed)
     proc{@c.load(:id => 2233).save}.should raise_error(Sequel::BeforeHookFailed)
     DB.sqls.should == []
   end
@@ -339,7 +336,6 @@ def self.validate(o)
 
   specify "#save should cancel the save and raise an error if before_validation returns false and raise_on_save_failure is true" do
     @c.before_validation{false}
-    proc{@c.load(:id => 2233).save}.should_not raise_error(Sequel::ValidationFailed)
     proc{@c.load(:id => 2233).save}.should raise_error(Sequel::BeforeHookFailed)
     DB.sqls.should == []
   end
diff --git a/spec/extensions/migration_spec.rb b/spec/extensions/migration_spec.rb
index f07745be37..cf6350edce 100644
--- a/spec/extensions/migration_spec.rb
+++ b/spec/extensions/migration_spec.rb
@@ -194,19 +194,19 @@ def alter_table(*args, &block)
   
   specify "should raise in the down direction if migration uses unsupported method" do
     m = Sequel.migration{change{run 'SQL'}}
-    proc{m.apply(@db, :up)}.should_not raise_error(Sequel::Error)
+    proc{m.apply(@db, :up)}.should_not raise_error
     proc{m.apply(@db, :down)}.should raise_error(Sequel::Error)
   end
   
   specify "should raise in the down direction if migration uses add_primary_key with an array" do
     m = Sequel.migration{change{alter_table(:a){add_primary_key [:b]}}}
-    proc{m.apply(@db, :up)}.should_not raise_error(Sequel::Error)
+    proc{m.apply(@db, :up)}.should_not raise_error
     proc{m.apply(@db, :down)}.should raise_error(Sequel::Error)
   end
   
   specify "should raise in the down direction if migration uses add_foreign_key with an array" do
     m = Sequel.migration{change{alter_table(:a){add_foreign_key [:b]}}}
-    proc{m.apply(@db, :up)}.should_not raise_error(Sequel::Error)
+    proc{m.apply(@db, :up)}.should_not raise_error
     proc{m.apply(@db, :down)}.should raise_error(Sequel::Error)
   end
 end
@@ -263,7 +263,7 @@ def table_exists?(name)
   end
   
   specify "should not raise and error if there is a missing integer migration version and allow_missing_migration_files is true" do
-    Sequel::Migrator.run(@db, "spec/files/missing_integer_migrations", :allow_missing_migration_files => true).should_not raise_error(Sequel::Migrator::Error)
+    proc{Sequel::Migrator.run(@db, "spec/files/missing_integer_migrations", :allow_missing_migration_files => true)}.should_not raise_error
   end
 
   specify "should raise and error if there is a duplicate integer migration version" do
@@ -622,7 +622,7 @@ def create_table(name, *args, &block)
     @db[:schema_migrations].select_order_map(:filename).should == %w'1273253849_create_sessions.rb 1273253851_create_nodes.rb 1273253853_3_create_users.rb'
 
     @dir = 'spec/files/missing_timestamped_migrations'
-    proc{@m.run(@db, @dir, :allow_missing_migration_files => true)}.should_not raise_error(Sequel::Migrator::Error)
+    proc{@m.run(@db, @dir, :allow_missing_migration_files => true)}.should_not raise_error
     [:schema_migrations, :sm1111, :sm2222, :sm3333].each{|n| @db.table_exists?(n).should be_true}
     @db[:schema_migrations].select_order_map(:filename).should == %w'1273253849_create_sessions.rb 1273253851_create_nodes.rb 1273253853_3_create_users.rb'
   end
diff --git a/spec/extensions/nested_attributes_spec.rb b/spec/extensions/nested_attributes_spec.rb
index 2f314d0a52..dff287608e 100644
--- a/spec/extensions/nested_attributes_spec.rb
+++ b/spec/extensions/nested_attributes_spec.rb
@@ -340,7 +340,7 @@ def before_create # Have to define the CPK somehow.
     @Album.nested_attributes :artist
     proc{a.set(:artist_attributes=>{:id=>'20', :_delete=>'1'})}.should raise_error(Sequel::Error)
     @Album.nested_attributes :artist, :destroy=>true
-    proc{a.set(:artist_attributes=>{:id=>'20', :_delete=>'1'})}.should_not raise_error(Sequel::Error)
+    proc{a.set(:artist_attributes=>{:id=>'20', :_delete=>'1'})}.should_not raise_error
   end
   
   it "should only allow removing associated objects if :remove option is used in the nested_attributes call" do
@@ -350,7 +350,7 @@ def before_create # Have to define the CPK somehow.
     @Album.nested_attributes :artist
     proc{a.set(:artist_attributes=>{:id=>'20', :_remove=>'1'})}.should raise_error(Sequel::Error)
     @Album.nested_attributes :artist, :remove=>true
-    proc{a.set(:artist_attributes=>{:id=>'20', :_remove=>'1'})}.should_not raise_error(Sequel::Error)
+    proc{a.set(:artist_attributes=>{:id=>'20', :_remove=>'1'})}.should_not raise_error
   end
   
   it "should raise an Error if a primary key is given in a nested attribute hash, but no matching associated object exists" do
@@ -358,7 +358,7 @@ def before_create # Have to define the CPK somehow.
     ar = @Artist.load(:id=>20, :name=>'Ar')
     ar.associations[:albums] = [al]
     proc{ar.set(:albums_attributes=>[{:id=>30, :_delete=>'t'}])}.should raise_error(Sequel::Error)
-    proc{ar.set(:albums_attributes=>[{:id=>10, :_delete=>'t'}])}.should_not raise_error(Sequel::Error)
+    proc{ar.set(:albums_attributes=>[{:id=>10, :_delete=>'t'}])}.should_not raise_error
   end
   
   it "should not raise an Error if an unmatched primary key is given, if the :strict=>false option is used" do
@@ -388,7 +388,7 @@ def before_create # Have to define the CPK somehow.
     co = @Concert.load(:tour=>'To', :date=>'2004-04-05', :playlist=>'Pl')
     ar.associations[:concerts] = [co]
     proc{ar.set(:concerts_attributes=>[{:tour=>'To', :date=>'2004-04-04', :_delete=>'t'}])}.should raise_error(Sequel::Error)
-    proc{ar.set(:concerts_attributes=>[{:tour=>'To', :date=>'2004-04-05', :_delete=>'t'}])}.should_not raise_error(Sequel::Error)
+    proc{ar.set(:concerts_attributes=>[{:tour=>'To', :date=>'2004-04-05', :_delete=>'t'}])}.should_not raise_error
   end
 
   it "should not raise an Error if an unmatched composite primary key is given, if the :strict=>false option is used" do
diff --git a/spec/model/associations_spec.rb b/spec/model/associations_spec.rb
index 582679ab58..7f23ffd4c4 100644
--- a/spec/model/associations_spec.rb
+++ b/spec/model/associations_spec.rb
@@ -134,8 +134,8 @@ class ::ParParent < Sequel::Model; end
   it "should allow cloning of one_to_many to one_to_one associations and vice-versa" do
     c = Class.new(Sequel::Model(:c))
     c.one_to_one :c
-    proc{c.one_to_many :cs, :clone=>:c}.should_not raise_error(Sequel::Error)
-    proc{c.one_to_one :c2, :clone=>:cs}.should_not raise_error(Sequel::Error)
+    proc{c.one_to_many :cs, :clone=>:c}.should_not raise_error
+    proc{c.one_to_one :c2, :clone=>:cs}.should_not raise_error
   end
 
   it "should clear associations cache when refreshing object manually" do
diff --git a/spec/model/hooks_spec.rb b/spec/model/hooks_spec.rb
index e1e2dd4fc5..f50fd4bc5f 100644
--- a/spec/model/hooks_spec.rb
+++ b/spec/model/hooks_spec.rb
@@ -24,7 +24,7 @@ def after_create
     @c.send(:define_method, :before_create){false}
     proc{@c.create(:x => 2)}.should raise_error(Sequel::BeforeHookFailed)
     DB.sqls.should == []
-    proc{@c.load(:id => 2233).save}.should_not raise_error(Sequel::ValidationFailed)
+    proc{@c.load(:id => 2233).save}.should_not raise_error
   end
 
   specify ".create should cancel the save and return nil if before_create returns false and raise_on_save_failure is false" do
@@ -55,7 +55,6 @@ def after_update
 
   specify "#save should cancel the save and raise an error if before_update returns false and raise_on_save_failure is true" do
     @c.send(:define_method, :before_update){false}
-    proc{@c.load(:id => 2233).save}.should_not raise_error(Sequel::ValidationFailed)
     proc{@c.load(:id => 2233).save}.should raise_error(Sequel::BeforeHookFailed)
     DB.sqls.should == []
   end
@@ -63,7 +62,6 @@ def after_update
   specify "#save should cancel the save and raise an error if before_update returns false and raise_on_failure option is true" do
     @c.send(:define_method, :before_update){false}
     @c.raise_on_save_failure = false
-    proc{@c.load(:id => 2233).save(:raise_on_failure => true)}.should_not raise_error(Sequel::ValidationFailed)
     proc{@c.load(:id => 2233).save(:raise_on_failure => true)}.should raise_error(Sequel::BeforeHookFailed)
     DB.sqls.should == []
   end
@@ -104,7 +102,6 @@ def after_save
 
   specify "#save should cancel the save and raise an error if before_save returns false and raise_on_save_failure is true" do
     @c.send(:define_method, :before_save){false}
-    proc{@c.load(:id => 2233).save}.should_not raise_error(Sequel::ValidationFailed)
     proc{@c.load(:id => 2233).save}.should raise_error(Sequel::BeforeHookFailed)
     DB.sqls.should == []
   end
@@ -112,7 +109,6 @@ def after_save
   specify "#save should cancel the save and raise an error if before_save returns false and raise_on_failure option is true" do
     @c.send(:define_method, :before_save){false}
     @c.raise_on_save_failure = false
-    proc{@c.load(:id => 2233).save(:raise_on_failure => true)}.should_not raise_error(Sequel::ValidationFailed)
     proc{@c.load(:id => 2233).save(:raise_on_failure => true)}.should raise_error(Sequel::BeforeHookFailed)
     DB.sqls.should == []
   end
@@ -208,7 +204,6 @@ def validate
 
   specify "#save should cancel the save and raise an error if before_validation returns false and raise_on_save_failure is true" do
     @c.send(:define_method, :before_validation){false}
-    proc{@c.load(:id => 2233).save}.should_not raise_error(Sequel::ValidationFailed)
     proc{@c.load(:id => 2233).save}.should raise_error(Sequel::BeforeHookFailed)
     DB.sqls.should == []
   end
@@ -216,7 +211,6 @@ def validate
   specify "#save should cancel the save and raise an error if before_validation returns false and raise_on_failure option is true" do
     @c.send(:define_method, :before_validation){false}
     @c.raise_on_save_failure = false
-    proc{@c.load(:id => 2233).save(:raise_on_failure => true)}.should_not raise_error(Sequel::ValidationFailed)
     proc{@c.load(:id => 2233).save(:raise_on_failure => true)}.should raise_error(Sequel::BeforeHookFailed)
     DB.sqls.should == []
   end