Assuming you're running Compiz, try switching to Metacity and see if that solves the problem. The package fusion-icon will help with this.
Sounds like a duplicate of bug 220443. Please mark as such if you think the same.
Assuming you're running Compiz, try switching to Metacity and see if that solves the problem. The package fusion-icon will help with this.
Sounds like a duplicate of bug 220443. Please mark as such if you think the same.