I just installed Fusion on my boot camp partition. I am using a microsoft wireless mouse (5000). For some reason, while in Windows on Fusion, the mouse is way too fast and erratic, however in boot camp (using the same exact mouse settings), it is just right. In Leopard, it is also just right. I can try and slow down the mouse on Fusion, but it seems to slow down too much and still be somewhat erratic. Is this because vmware tools are installed? Is this a compatibility issue with Fusion and this particular mouse? Any ideas, suggestions? Try parallels instead? Thanks.