This is not going to be a particularly helpful bug report, but there's not much I can do about it.

Windows 7 64 bit. Latest version of SourceTree (also happened with older ones though). My disk is an Intel 320 Series 120gb SSD. Latest updates, latest drivers on everything.

When ST is open, I randomly get BSODs. There is absolutely no pattern to it whatsoever. I don't even have to be interacting with ST for it to happen, so my guess is that the issue is connected to the directory monitoring. It took me a long time to even figure out ST was causing it...

The length between BSODs might be 5 minutes or more than a day.

It's not even the same message every time! I've gotten IRQL_NOT_LESS_OR_EQUAL, PAGE_FAULT_IN_NONPAGED_AREA, QUOTA_UNDERFLOW...

Reading this your natural reaction will be that it's not ST causing it, but I'm 100% positive. I have never gotten a BSOD while ST was closed.

Hope you can find it!