hard lockups with RC1

[Ashley Williams]

I've recently upgraded from 9.0 beta1 to RC1 and experiencing a few hard
lockups, they seem to related to browsing - both chromium and firefox cause
the lockups. (requiring a hard reset )
All I can think of is something related to Linux emulation and flash, but I
could be wrong. Rolling back the kernel version with the same userland
clears up the problem.

I haven't been able to get any logs or cores to help diagnose this problem,
so I'd appreciate a push in the right direction.