Inconsistent mutex lock crash

[gewalker]

Two examples:

When selecting Shared Content:
Processing results from worker: 14 (context: 12000).
xbmc.bin: ath.c:193: _gcry_ath_mutex_lock: Assertion `*lock == ((ath_mutex_t) 0)' failed.
Aborted
Crash report available at /home/gary/xbmc_crashlog-20111204_151213.log

During menu navigation:

[0x7f9e057a2510] Processing content request in thread [http://127.0.0.1:32400/channels/recentlyViewed?filter=video]
Processing results from worker: 1 (context: 11002).
xbmc.bin: ath.c:193: _gcry_ath_mutex_lock: Assertion `*lock == ((ath_mutex_t) 0)' failed.
Aborted

[elan]

Can you post a full stack trace?