I have just installed a new mac pro. Everything works except I get occasional mouse pointer freezes. They last for about 1 second each time and seem to occur randomly, on average with 1-2 min intervals. The only things I have installed on top of OS X so far driver wise is MouseWorks to power my Kensington trackball. I use my older large full-keyed white Pro keyboard and only use the smaller wireless one remotely. I have tried deactivating Bluetooth but the mouse freezes still persist. Any suggestions on how to solve this problem? Thanks in advance.