Spent a very frustrating week trying to reproduce bug#6732: Intermittent crash during functional tests. I wasn't able to run the tests because of bug#7216: debug functional tests fail to run on my PPC Mac version 10.4.8 and bug#7229: Non-reproducable Assert running debug functional tests on mac.
Bug #7216 was tricky to narrow down. When my power saving options turn off my monitor, a mac API reported that there isn't a current display. When there isn't a current display various asserts fire in debug wxWidgets. This make it difficult to track down since my monitor was always turned on when I was debugging it.
Bug #7229, was caused by the time out for the recurrence tests being too fast for my Mac -- apparently I have the slowest Mac at OSAF and working on such a slow machine has been frustrating. So I just bought a new Core 2 Duo notebook which should arrive in a few weeks.
I'm finally able to run the functional tests continuously. After about 24 hours running on my slow PPC I still haven't seen a crash.