Hi, I had the same problem. In my case, it was caused by using Xinerama together with nvidia proprietary drivers. I don't know whether this applies to Stephen's problem, but it might help someone else. The solution was to replace Xinerama with the 'TwinView' option. Here is a good description on how to do this (second message): http://ubuntuforums.org/archive/index.php/t-75149.html [1] I should also mention that I'm using Fedora Core 5 and that the problem occured only after upgrading the kernel to version 2.6.20-1.2316.fc5. Cheers, Cristian Links: ------ [1] http://ubuntuforums.org/archive/index.php/t-75149.html -- This is an email sent via The Fedora Community Portal https://fcp.surfsite.org https://fcp.surfsite.org/modules/newbb/viewtopic.php?post_id=177371&topic_id=34478&forum=10#forumpost177371 If you think, this is spam, please report this to webmaster@xxxxxxxxxxxxxxxx and/or blame cristian_pirnog@xxxxxxxxxx