Comment 20 for bug 938658

I hunted this one down after getting white windows without maximizing.

For me it happens to when I minimize windows for applications that have more than one.

For instance, open two nautilus windows, minimize one, click the launcher button and the minimized window is white in the expose view. If you minimize all open nautilus windows, and click the launcher button, then all windows come back up with only the last minimized one still having its contents.

The same thing happens to Thunderbird with message windows too. Or any other application.

I'm also on a fully updated 12.04 with nvidia-drivers.