Looks like i have solved my cursor and lockup problem for good,
it was a mater of "aticonfig --sync-vsync=off".
I don't think vsync was on in previous drivers, perhaps it started with 11.5, at least that is when the cursor problem started.
But, the bonus is that I think the lockups I have been experiencing have finally stopped for good.
I have an acer aspire with hd4200
hmm..cursor still bugged for me.
lockups i havent experienced
yap, corner-bug is still inside the release