Thread 1 Crashed:0 com.apple.CoreFoundation 0x9082068f CFDataGetLength + 171 ...ickTimeComponents.component 0x984f31d6 _SGAudioAppendPropertyToNotifyArray + 352 ...ickTimeComponents.component 0x984f874f sgAudioQTSGAudioContextPropertyListenerProc + 1143 ...ickTimeComponents.component 0x984e36f6 _QTSGAudioContextNotifyPropertyListeners + 2214 ...ickTimeComponents.component 0x984ecbf9 qtCoreAudioContextDeviceListenerProc + 2385 com.apple.audio.CoreAudio 0x914688bc HALPropertyListener::Call(unsigned long, unsigned long, AudioObjectPropertyAddress const*) + 2166 com.apple.audio.CoreAudio 0x914531a9 HALObject::PropertiesChanged(unsigned long.....
The important parts being CFDataGetLength etc, etc.
Of course, the 'Thread 1 Crashed' might read 'Thread 7 Crashed' or something else.
If you're experiencing this problem at all - I'd love you to get in touch. I've been working to find the solution (I may have found it this evening, it's an elusive and difficult thing to test since it's unpredictable), and I'd love to be able to fix the problem for you if it's getting on your nerves.