Seems to be fixed after upgrading to linux-image-2.6.17-10-generic 2.6.17-10.26 and usplash 0.4-31.
-- poweroff/reboot hangs with boot splash and dual-head X setup (edgy) https://launchpad.net/bugs/62091 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
