I installed today's kernel (linux-headers-2.6.36-999-generic_2.6.36-999.201008241121) and tested it without i8042.nomux=1. I reproduced the bug 3 times in 3 hours. (while moving the touchpad, the cursor disappears and quickly reappears in another place of the screen).
I installed today's kernel (linux- headers- 2.6.36- 999-generic_ 2.6.36- 999.20100824112 1) and tested it without i8042.nomux=1. I reproduced the bug 3 times in 3 hours. (while moving the touchpad, the cursor disappears and quickly reappears in another place of the screen).