Linux puna 2.6.31-17-generic #54-Ubuntu SMP Thu Dec 10 16:20:31 UTC 2009 i686 GNU/Linux
This reappeared for me with kernel 2.6.31-17-generic #54-Ubuntu . Put "reboot=b" back to the grub linux command line, and the problem was fixed. 2.6.31-16 was rebooting OK. My machine is a Dell Precision 690.
Linux puna 2.6.31-17-generic #54-Ubuntu SMP Thu Dec 10 16:20:31 UTC 2009 i686 GNU/Linux
This reappeared for me with kernel 2.6.31-17-generic #54-Ubuntu . Put "reboot=b" back to the grub linux command line, and the problem was fixed. 2.6.31-16 was rebooting OK. My machine is a Dell Precision 690.