[PyQt] Disturbing evidence of garbage collection error

[Andrew Suffield]

On Mon, Apr 30, 2012 at 09:25:52AM +0200, Hans-Peter Jansen wrote:
> following Eriks suggestion of disabling the GC altogether would have given a 
> valuable data point for your issue.

Oh, I did try that. Everything works fine when GC is disabled.

> Vanishing still referenced local 
> variables in a thread context is more than a disturbing evidence, that 
> deserves some deep examination. 

Indeed, but I spent a couple days on it and didn't get a lot of
traction. Pesky thing was so timing-sensitive that adding debugging
instrumentation to Qt, or using a debugging build of python, threw it
off enough not to trigger the bug.