Hi, newbie here; I have a macbook pro, on snow leopard, and parallels 7 and windows xp; I run only one windows program; it is street atlas by delorme; has worked fine for a few years; starting a few days ago, when I connect my gps receiver to the usb port, then click in the program to "start gps", my entire computer crashes; this is the only condition where it does this; I can run windows xp all day long, and street atlas all day long, no problems; only crashes the computer if the gps is plugged in (still no crash) and then click on the 'start gps' button within street atlas. thanks!