I tried frnstefano's suggestion of installing linux-image-generic-lts-backports-natty in lucid, and vertical scroll did work. I had to jump through a few hoops to get the NVIDIA graphics to work (I had to blacklist the intel drivers and install the linux headers for the 2.6.37-12).
Unfortunately I had trouble with virtual-box-ose which I need for work, so I rolled back to 2.6.32-28.
I tried frnstefano's suggestion of installing linux-image- generic- lts-backports- natty in lucid, and vertical scroll did work. I had to jump through a few hoops to get the NVIDIA graphics to work (I had to blacklist the intel drivers and install the linux headers for the 2.6.37-12).
Unfortunately I had trouble with virtual-box-ose which I need for work, so I rolled back to 2.6.32-28.