I am getting very strange flickering on a WPF application of mine. It only happens with alpha blended content, only on my computer, and only with WPF applications. At least I haven’t noticed it with anything else. It’s really annoying! Has anyone else dealt with this weirdness?

Try disabling hardware acceleration to see if that resolves the issue. If it does, try updating your video card drivers and turning back on hardware acceleration. For more details, see here:
http://msdn.microsoft.com/en-us/library/aa970912.aspx