I had the same problem with 3.x. Can't rember if I fixed it with the upgrade to 4.x or just by adding a little more RAM to the clients. Maybe both. Luis Robert Arkiletian wrote: > Mice are sometimes freezing. Keyboard input is fine. X is still up but > I have to Ctrl-Alt-Backspace to get mouse back. > > Anyone solve this problem? I'm running 3.1.2 >