We should test to see whether Render acceleration conflicts with 3D clients on
R200 - see bug 770 for the issues seen with 3D clients on r200 currently. I'm
pretty sure that Render acceleration can be enough to conflict with clients and
cause hangs. Once that's resolved, it should be made the default after another
round of testing, though this is the only issue I know of with it.
Render acceleration has been reenabled.