I have a new install of Ubuntu 11.04 and sometimes the window borders will disappear. How do I prevent this or at least get them back without logging out and logging back in (which means close all my programs)?

I have installed WINE but it is not running, but seems to make it happen more often I think when it is running, probably just cause of the exe I am running.

I probably have an out of date Ubuntu because I have no internet and I think Ubuntu comes out of date when you get the ISO, but if there was a patch I needed, I can install it.