Comment 13 for bug 314050

from:
http://changelogs.ubuntu.com/changelogs/pool/main/l/linux/linux_2.6.28-5.15/changelog

Doesn't appear to be any Ubuntu specific changes between 2.6.28-2 and 2.6.28-3, are you sure this is the work/not-work break? There is re-basing to Master 2.6.28-rc8 in Ubuntu 2.6.28-3.4.