qt4 - Copy/Paste from qt4 application

I'm not sure if this is a known limitation, or if it's something specific with my use of Qt4, but it ap开发者_如何学Cpears that when I copy/cut from one of my Qt4 applications, I cannot paste it anywhere except other Qt4 applications. Occasional I AM able to paste into an external application (for example, a shell terminal), but this is rare and occurs sporadically. I'm running on Redhat 5.

The documentation on QTextField doesn't mention anything about it. The copy slot in the QTextEdit looks fairly straight forward.

I came across this bug, but it is specific to Symbian OS. Any other thoughts/suggestions?