Unsharp text after YOU update

Help !! I just did my first YOU update after the intial install of 9.0 last week, and now I suddenly have annoying unsharp text on my display. It all looks a bit smudgy. Before the update I had a nice crisp and clear text display using the NVIDIA 4363 driver. I just tried using the default nv-driver, but that gives me the same display quality. Any ideas what might be wrong here ? Help is highly appreciated. BTW : anti-aliasing is activated. TIA and cheers, -- Jan Elders Nuenen the Netherlands