There is problem with uvesafb, which used in 2.6.26-3 kernel. Check bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/246269 Maybe this is the same bug.
There is problem with uvesafb, which used in 2.6.26-3 kernel. /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/246269
Check bug https:/
Maybe this is the same bug.