admin.sleepBlocks hangs

[silly-n]

Running geth for private chain, on console I issue miner.start(8); then admin.sleepBlocks(1); and the terminal stops responding. It doesn't recover even when many blocks are mined.
Any suggestions?

geth 1.4.0, but the behaviour was the same yesterday on 1.3

Some logs ...

I1130 12:38:44.672084 4166 mergedapi.go:61] admin_sleepBlocks [1,null]
I1130 12:38:45.281871 4166 state_object.go:184] 5102a5dfa7fddde0fbdb85ef8e1735ea37f9103b: #5 9185000000000000000000 (+ 5000000000000000000)
I1130 12:38:45.282007 4166 worker.go:570] commit new work on block 2072 with 0 txs & 0 uncles. Took 5.000389623s
I1130 12:38:45.282025 4166 worker.go:448] 🔨 🔗 Mined 5 blocks back: block #2066
I1130 12:38:45.282076 4166 agent.go:118] (re)started agent[6]. mining...
I1130 12:38:45.282091 4166 agent.go:118] (re)started agent[2]. mining...
I1130 12:38:45.282101 4166 agent.go:118] (re)started agent[5]. mining...
I1130 12:38:45.282112 4166 agent.go:118] (re)started agent[7]. mining...
I1130 12:38:45.282095 4166 agent.go:118] (re)started agent[3]. mining...
I1130 12:38:45.282386 4166 state_object.go:184] 5102a5dfa7fddde0fbdb85ef8e1735ea37f9103b: #5 9185000000000000000000 (+ 5000000000000000000)
I1130 12:38:45.282503 4166 worker.go:570] commit new work on block 2072 with 0 txs & 0 uncles. Took 235.158µs
I1130 12:38:45.282540 4166 agent.go:118] (re)started agent[7]. mining...

[bas-vk]

@silly-n, this issue is fixed in develop.
Thx for reporting.

[aaronstjohn]

I'm experiencing the same issue, even after switching to the develop branch. I'm running geth consistently with the tutorial docs here:
https://ethereum.gitbooks.io/frontier-guide/content/testing_contracts_and_transactions.html

Here's my session:

instance: Geth/v1.4.0-unstable-0ab8a175/darwin/go1.5.2
coinbase: null
at block: 0 (Wed, 31 Dec 1969 16:00:00 PST)
 datadir: testnet
> personal.newAccount();
Passphrase: 
Repeat passphrase: 
"0x7621b34d585daed08f2a2d02f08abadfc2b352fc"
> miner.start(8);
true
> admin.sleepBlocks(10);

Here's the log file that gets dumped out:
testnet.txt