The problem appears on 2.6.31-15-generic-pae, too.
$ fgrep pae /proc/cpuinfo flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm tpr_shadow $ uname -a Linux future 2.6.31-15-generic-pae #50-Ubuntu SMP Tue Nov 10 16:12:10 UTC 2009 i686 GNU/Linux
The problem appears on 2.6.31- 15-generic- pae, too.
$ fgrep pae /proc/cpuinfo 15-generic- pae #50-Ubuntu SMP Tue Nov 10 16:12:10 UTC 2009 i686 GNU/Linux
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm tpr_shadow
$ uname -a
Linux future 2.6.31-