ptn, have you checked you are loading the correct kernel? To fix a similar problem I manually edited /boot/grub/menu.lst to replace references to the old kernel (2.6.28-15-generic) with (2.6.31-14-generic) and hey presto all is well with the touchpad.
Please see my post here... https://answers.launchpad.net/ubuntu/+question/87664 hope this helps -- [Regression] touchpad not recognized on upgade to karmic (sony vaio VGN-SR220) https://bugs.launchpad.net/bugs/467164 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
