Comment 52 for bug 311869

@Thomas: my serio0 looks exactly like yours, however my FSP is serio1.
i don't know about replacing the kernal, however you could upgrade to the beta of 10.04, it will be released the 18th if i'm correct.

are you 100% sure you replaced the psmouse.ko file? it's the part with the modprobe command. (it needs to be done again if you've updated the kernel, say from -19 to -20)

in lucid (10.04) you should be able to use the commands described above (post #34 and following)