Turning virtualization off didn't fix it for me, but acpi=off did.
Sony Vaio FW-250J
Linux ***** 3.5.0-18-generic-tuxonice #29~ppa3-Ubuntu SMP Fri Nov 9 05:59:09 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Turning virtualization off didn't fix it for me, but acpi=off did.
Sony Vaio FW-250J
Linux ***** 3.5.0-18- generic- tuxonice #29~ppa3-Ubuntu SMP Fri Nov 9 05:59:09 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux