Sorry to hear you have the same problem as me, it's very frustrating !
the graphic driver i'm using i have had a while and seems to be the only one that works ok.
As i said in earlier thread, try reduce hardware accelaration (xp) and set marqee to "no scroll" may help, but hey one of the best features of H4 is the scrollin' marquee LOL.
If you find a resolve please share !
Thanks
Dave.