[kubuntu] Hardy - ATI Radeon 9550 Direct Rendering works, but no 3D

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http://ubuntuforums.org – I was running Dapper with both direct rendering and 3D acceleration working using the fglrx binary driver for my ATI Radeon 9550 card. I recently updated to Hardy, and switched to the free software radeon driver. After doing some research and tweaking, I managed to get direct rendering working. glxgears now shows decent frame rates (e.g. 1757.013 FPS). However, none of my 3D apps seem to be accelerated (KDE screen savers like "Solar Winds", nexuiz). Does anyone have any idea what the problem is or what I could try? Thanks! (Hardware)