Hi Rudolf, Recently, I installed a Matrox G400 agp card; vendor: 0x102b, pci id: 525, along with your DualHeadSetup_0.04 and Haiku_Matrox_V0.26. For some reason, PS/2 and USB mice are not visible on the 2ndary display. (or the primary if "Switch Head" is used"). Do you think this is related to the driver or the DualHeadSetup software? What can i do to help? and of course a big thank-you :) -mmadia