These guides have suggestions that may help track down what's going wrong:
[ul][li]Crash, exit or high CPU usage when viewing certain directories (most likely to be useful)[/li]
[li]Crash, exit or high CPU usage when right-clicking certain files (may be useful if it only happens some time after right-clicking files, but the guide above is more likely to help than this one)[/li]
[li]Crash dumps for bug reports[/li]
[li]General slowdown or instability investigation steps[/li][/ul]