This can happen at anytime it seems. Happens maybe once every other day. Computer will freeze and a continous beep will eminate from my external speakers. Appears to be completely random. It will freeze, then beeeeeeeeeeeeeeeeeeeeeeeeeeeeep...and the beep will not stop until I of couse restart system. anyone have any ideas on whats going on? Oh and this started happening after I switched to Qpack and RS482.