Window Decorations Keep Disappearing with Compiz

[WildZontar]

I'm running Compiz with the Classic desktop in Ubuntu 11.04. I've noticed that doing the slightest thing will make the window decorations disappear...enabling desktop cube, clicking the menu icon in the titlebar, whatever.

I'm running two GTX 570s (not in SLI), could this be an nvidia driver problem or something else?

[dummy910]

Same here on 11.04, Classic Desktop almost every time I left click the menu-button on any opened program, ugh.

I just do an alt-f2 (for the newbies: this key-combo will bring up a command line) and type in metacity --replace, prob still appears every so often after that. I haven't read the logs or done any troubleshooting on this one just yet.