[PyQt] Dead lock detected

[Frédéric]

Hello,

When executing my program, I have teh following error:

Qt: Dead lock detected while activating a BlockingQueuedConnection:
Sender is PyQtProxy(0x2d12c20), receiver is PyQtProxy(0x2d14cb0)

and the program freezes. What can cause such error? What is a PyQtProxy
for?

Thanks,

--
   Frédéric