I've noticed that thunar periodically aborts with a segfault for no apparent reason. Here's the relevant line from /var/log/messages:
Oct 28 11:53:41 cochituate kernel: thunar: segfault at afd4913b ip b6c1969b sp bfcab79c error 4 in libc-2.13.so[b6afe000+156000]
Has anyone else experienced this? Starting it back up again is no big deal, just "thunar --daemon &", but it would be even better if it didn't happen at all.