Waiting for multiple threads

Nice post on implementing a lock with timeout.

Though the code has two areas I would consider enhancing:
1) use WaitHandle.WaitAll to reflect the intent (and likelyhood) to aquire all locks or none [reason: performance]

2) There is a pathological case that two threads running at the same time will keep failing, if they hit the code for aquiring the locks in the for loop at the same time (since this is the case the code is written to handle it needs changing) - by implementing a variable amount of sleep time, thus ensuring that two threads that go to sleep at the same time don't wake up at the same time [reason: functional]