This is likely a duplicate of Bug #121653. FGLRX doesn't support 2.6.23, which could really mean "doesn't support the new SLUB allocator" (which Ubuntu uses in 2.6.22).
This is likely a duplicate of Bug #121653. FGLRX doesn't support 2.6.23, which could really mean "doesn't support the new SLUB allocator" (which Ubuntu uses in 2.6.22).