Is USB causing lockups in FS2002 ?

Hi,I had installed that beautiful MIG21 of Captain Sim and experienced from that time on lock-ups while I was flying the fighter. I did a lot of experiments and now I have found the cause: it is the USB! I had connected the mouse and joystick to the USB ports and at each lockup FS2002 didn't respond anymore on the mouse as well as the joystick. I had still respons on keyboard input but I had to reboot the system before control via mouse and joystick was returning. Now I have connected the mouse via a USB-PS/2 adapter to my computer and the lockups are gone!This is maybe of interest for you, guys, who are experiencing lockups from time to time too.Hm (a DC3 and MIG21 lover)