Yesterday all was well with my pc and I have always had Yahoo Messenger. I installed Yahoo's "new" Beta ver 8.0 and still my pc was normal. Turned pc off for the night.
Turned pc on this morning and my cursor is jittery and moving upward and to the left.
I tried the whole testing of my mouse (USB Track ball Optical) in another USB port and on another pc, hardware is fine.
Tried a RESTORE point to yesterday before the install of Yahoo Messenger Beta ver 8.0.
Tried uninstalling and re-installing mouse driver.
Adjusted mouse settings (POINTER OPTIONS):
select a pointer speed to 3rd tick and this stopped the jitters.
Unchecked "Enhance pointer precision" and this stopped the moving of the cursor upward-left.
The problem with this is now my mouse movement is TOO SLOW and will make for very difficult PS7 work, not to mention onlining gaming.
I'm at a lost as what to try next. Any help would greatly appreciated!