Comment 1 for bug 365968

I have a dell latitude d600, and see something very similar.

On Intrepid, when under moderate load, occasionally the mouse would get wonky. I could move it, but it didn't really notice the click event, and it wouldn't change window focus. I could fix this by rapidly clicking a bunch.

Now that I've upgraded to Jaunty, my experience is markedly worse. Twice now, in 2 days my machine has just started ignoring left click events. The cursor moves, right click works, but left click does not. This was not tied to excess load. Plugging in an external USB mouse does not change this at all.

I have the same messages in my logs.

The best suggestion I found on the internet was to add "psmouse.proto=imps" to the kernel boot, from http://www.debian-administration.org/articles/376 But that's from 3 years ago. I haven't yet tried it.