I've been having a fit with my Logitech MX700 Cordless Optical mouse running through a Linksys KVM switch. It doesn't track correctly, jumps around wildly opening windows at will. My exact equipment setup has worked with all versions of FC1 and with FC2 2.6.5-1.358. It stopped working with kernnel 2.6.5-1.435. Error message in /var/dmesg: psmouse.c : ExplorerMouse at isa0060/seriol/input0 lost synchronization, throwing 2 bytes away. I've tried several different configurations for /etc/X11/xorg.conf found in the archives. All others with this same error message seem to start working okay and then at some point stop tracking. Mine never tracks from the start. I've also tried Ctrl+Alt+F8 and then Alt + F7 or Ctrl + Alt + F7 all to no avail. A regular 2 button PS/2 mouse works. xorg.conf as configured during install: Section "Input Device" Driver "mouse" Option "Protocol" "IMPS/2" Option "Device" "/dev/psaux" Option "ZAxis Mapping" "4 5" Option "Emulate3Buttons" "no" End Section I've tried changing to Protocol = ExplorerPS/2 with Buttons = "7" and ZAxis Mapping = "6 7" but didn't work. Thanks -- Roger Finks <rcflinux@xxxxxxxxxxxxx>