Hello all,

I have the most assanine problem with my computer.

Occasionally when logging onto the internet and cruising around for a few minutes like I always do, all of the sudden from out of the blue, for no apparent reason that I can see, my speakers will project a loud siren sound. In fact, it sounds just like a police siren. I have no idea why! First off, I only visit a few sites (Sharky, gameSpy, Yahoo Mail, hotmail, and thats about it), none of which would be questionable for having something malicious in them.

Anyway, as I type this, this Siren sound is going off right now after just checking sharky. The sound will persist even when I get offline, until I restart my system, then everything is fine and dandy. I have an up to date virus scanner/firewall. I've done many virus scans on my computer and it has never turned up anything else. There are no other problems with my rig at all.
This has happened maybe 4-5 times in the last 4 months or so, and is currently doing it right now. Does anyone have ANY idea at all what this could be? My computer works and acts just fine aside from this blaring siren coming from my speakers that won't go away.

What the heck is this?? All suggestions welcome!