Resizing Window Causes Jaunty To Kick Me Back To Login Screen

[emergingtechnologies]

I just upgraded to Jaunty and have discovered that I am kicked back to the login screen is ANY window on the desktop is resized -- whether I do it or whether the application does it.

How can I fix this?

Thanks,
ET

Using Xubuntu 9.04 on 32bit Compaq.