Just FYI, I've reverted the following patch from the Maverick kernel:

commit bd79df42218fe1db5e683b567791d4bb97b60685
Author: Manoj Iyer <manoj.iyer@canonical.com>
Date: Wed Sep 8 19:40:57 2010 +0100

UBUNTU: SAUCE: Add support for Intellimouse Mode in ALPS touchpad on Dell E2 series Laptops

It resulted in a regression which broke a number of ALPS touchpads.
Please resend a proper fix for Bug 632884 as an SRU for Maverick.

Thanks,
Leann