kvm switch help

I just put this together this morning a problem I have been having for a while where my scroll wheel on my mouse hooked to my kvm switch will quit working after I make a switch from one computer to another an back again to first machine. If I reboot the machine it will scroll til i switch to another machine again. Using a two port belkin switch here on this end of the work bench. Using a kensington turboball mouse. I need to hook the spare turboball up to my conectgear 4 port switch on other end of work bench an see if the same things happens with it. Just wondering if anyone else here on the list has this problem an has solved it. thanks jack