 - Remove apause().  It makes no sense with our present mutex implementation    since simply unlocking a mutex does not ensure that one of the waiters    will run and acquire it.  We're more likely to reacquire the mutex    before anyone else has a chance.  It has also bit me three times now, as    it's not safe to drop the interlock before sleeping in many cases.
 - Remove apause().  It makes no sense with our present mutex implementation
   since simply unlocking a mutex does not ensure that one of the waiters
   will run and acquire it.  We're more likely to reacquire the mutex
   before anyone else has a chance.  It has also bit me three times now, as
   it's not safe to drop the interlock before sleeping in many cases.

Sponsored by:	Isilon Systems, Inc.

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