Hello, I'd like to report a bug suspect. No idea if it is related to PyQt or to Qt and no idea how to give additional debug information. So, in a few words >> QKeySequence(QKeySequence.Copy) reliably crashes one of my Guis. Looks like QKeySequence() for some reason does not like to be initialized with StandardKeys. Qt 4.3.0 PyQt 4.3 Jürgen