I hope I nailed this thing. The common theme was that the crashes are somehow tied to sqlobject; and one place where TG has global sqlobject data autoconnection hub. So...
Adding the following to stopTurboGears() function at startup.py:163
seem to fix the problem:
from turbogears.database import hub_registry
for hub in hub_registry:
hub.end()
hub_registry.clear()
At least, I no longer got the crashes (XP SP2, MySQL)
Please report whether it works for you.
Regards,
Max.

