App Freezes up occasionally

Topics: Prism v2 - WPF 3.5
Nov 13, 2009 at 3:58 PM

Hello, our WPF app at times freezes up when doing screen transitions.  We are using PRISM Composite WPF and animations either on or off (animations such as flip horizontally, collapse to the left, slide up/down).  Seems to happen more often on Windows XP although I have seen it in Windows 7 in VS in debug mode.  We have background threads doing some processing but they keep going even though the UI freezes up.

Strangely enough, when we turn PresentationTraceSources logging on, it doesn't seem to freeze up...

It is pretty much repeatable on one XP machine w/out dev tools - without the PresentationTraceSources logging.  Any suggestions on how to troubleshoot and diagnose on this box?  Thinking of opening an MSDN support request.

I tried the Oct 2009 version of PRISM but didn't help.