I've upgraded an Opteron machine from SL 3.05 i386 to SL 4.2 x64 (a clean, new install). The reason I mention 3.05 is that there were no issues when running on 3.05. Now the mouse is freezing and when it freezes you can use the keyboard to logout, but that just goes to a blank screen, with Xwindows frozen as well and only a hard reboot can be done. I've googled for SL, Red Hat and FC, but haven't found anything relevant. Has anyone else seen this? Anyone have any suggestions, besides going back to 3.05? Gary Wilson [log in to unmask]