A T61 of mine was affected by this bug as well. Downgrading mountall from rev. 2.22 to 2.21 did not help, no luck with downgrading ureadahead from 0.100.0-10 to 0.100.0-9 either.
I then tried booting into Ubuntu 10.10 which was installed on the same machine (but on a different root partition) and that would also hang at the Ubuntu screen with the 5 dots underneath (and alternating). Re-doing a grub-install from the Ubuntu 11.04 root partition did not help or make any difference. So, then I booted into a rescue system, chrooted into the Ubuntu 10.10 root partition and re-did grub-install. That restored the system to a point where I could boot into Ubuntu 10.10 at least. I hope this helps. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/723482 Title: system hangs on boot after updates from 2011-02-22 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs