Some problems with iPhoto 7.15/Snow ...

After upgraded to Snow Leopard I have noticed some problems with iPhoto 7.15.
I have Mac mini with Intel GMA video card.

Lots of features works well except picture editing. When I edit the picture I often see corrupted screen. It looks like problem with video driver. Please look at screenshots:
http://picasaweb.google.com/rajdyger/ZrzutZEkranu?authkey=Gv1sRgCLqRmdSZvpC-SQ

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