I still encounter this problem, I'm running the 2.6.27-7 kernel, on a 64bit intel core 2 duo, but with Ubuntu 8.10 rc1 (updated from BETA 32bit).
Linux loo 2.6.27-7-generic #1 SMP Fri Oct 24 06:42:44 UTC 2008 i686 GNU/Linux
I still encounter this problem, I'm running the 2.6.27-7 kernel, on a 64bit intel core 2 duo, but with Ubuntu 8.10 rc1 (updated from BETA 32bit).
Linux loo 2.6.27-7-generic #1 SMP Fri Oct 24 06:42:44 UTC 2008 i686 GNU/Linux