Comment 5 for bug 367379

I don't use Steam but do use an audio program in wine that started crashing lately, and want to find out if you have the same problem I do.
What exactly are you doing when steam crashes? Are you using the microphone function?
If you are using the microphone, do you leave it on all the time, or is it activated with a hotkey?
Try installing Audacity for Windows, and record yourself talking. See if that crashes when you start, stop, then re-start the record function.