I have been using Ubuntu 12.04 LTS on my work desktop for a few months. Yesterday, I started having issues with my USB mouse.
Whenever I type for a while, and I try to move the mouse afterwards, it takes a couple of seconds to respond.
I kept a tail of the system log open on a side screen, and also the graphical process monitor. I have not noticed any unusual activity during the mouse freezes.
What I did notice one was that the mouse tracking light had gone into an odd pulsing mode while it was frozen once. It looked like a power-save mode.
What other log views or debug tools could I use to determine what's happening?