The Linux PC I am posting off of was slowing down and was locking up multiple times a week/day. The wheel mouse, right & right keys would work but the mouse pointer was locked up. Changed out the mouse first no change then the keyboard which corrected the issue. I am on the original mouse and different keyboard for 7 days now all is well solid function no lockups.. The keyboard in the trash must have been keying in garbage and filling up the buffer. Something to try before a reformat if you have issues.