When using an ATI 8500LE using open source drivers (r200) in XGL server using compiz 6.5.1_pre20060714, 6.5.1_pre20060716, 6.5.1_pre20060810, 6.5.1-rc1 give great XGL performance when moving windows around the screen. Newer versions such as 6.5.1_pre20060831, 6.5.1-r1 are very choppy. Always reproducible.
*** This bug has been marked as a duplicate of 149674 ***