Changelog of NVIDIA drivers 1.0-4191 tells that they are disabling hardware XRENDER acceleration by default with this release; setting it back on is somewhat non-trivial for average user.

It could make sense to add this line to XF86Config-4\'s Section \"Device\" when configuring for Driver \"nvidia\":

# Option \"RenderAccel\" \"on\"


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One more nifty thing (of bells\'n\'whistles kind) would be to put

# Option \"CursorShadow\" \"on\"
# Option \"CursorShadowAlpha\" \"32\"
# Option \"CursorShadowXOffset\" \"2\"
# Option \"CursorShadowYOffset\" \"2\"

there too: it\'s encouraging when config file shows some nice things you can do with it (=> your system). :-)