Occasional Mouse Failure

I use S.u.S.E. 7.3. Sometimes, after booting up, the mouse movements are not recorded on the screen. That is, when the X screen appears shortly before ximian-gnome starts up, the cursor does not respond to the mouse movement. Nor does it respond when I am asked to put in my user name and password. I reboot, and the problem is resolved. Is there any way I can fiddle here or there to prevent this from happening? Thanks dj tuchler