[python?] DBus + gtk + thread = problems

[René 'Necoro' Neumann]

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Hi :)

I yesterday discovered a bug in dbus (or dbus-python) when using dbus
inside of a (py)gtk application: As an example, I create a window with a
button. When clicking the button, a new thread is started which runs a
dbus statement. (see attached example)

On a unicore system on of the following things can happen (when
repeatedly clicking the button)
	- it runs normally
	- the app just ends (no segfault or similar):
		+ gdb just says "Program exited with code 01."
	- it segfaults
		+ see attached bt_delete_unicore.txt for a backtrace

On a dualcore system the application segfaults on first click. When
looking at the backtraces I saw 4 different "species". With other words:
Each segfault seems to be one of this 4. I attached the backtraces.

I found out the following facts:
	- if there is no dbus call - it does not fail
	- if there is no gtk environment - it does not fail
	- if the dbus call is not made in the thread - it does not fail

I don't know if this is a dbus or a dbus-python problem...
These are the versions I used:

dbus: 1.1.20 & 1.1.4
dbus-glib: 0.74
dbus-python: 0.82.4

Perhaps one of you can tell me, what's wrong :). If you need some more
info (like debug info - or stuff the gdb tells me), just ask.

Regards,
Necoro
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