[PyQt] RuntimeError: underlying C/C++ object has been deleted

[Alexandr N Zamaraev]

Alexandr N Zamaraev wrote:
> Os Windows Vista Home Ru + sp1
> g++ (GCC) 3.4.5 (mingw-vista special r3)
> Qt 4.5 (self build)
> sip-4.7.9 (self build)
> PyQt-win-gpl-4.4.4.zip (self build)
I reproduce this with
sip-4.8-snapshot-20090424 (self build)
PyQt-win-gpl-4.5-snapshot-20090328 (self build)

Call Garbage Collector after the closing of the dialogue does not 
produce any effect.

Can anyone suggest some ideas for more accurate detection of this bug?