Large amounts of usage used really quickly on three wireless?

Question

I've had three wireless broadband for 5 days now and it's been pretty good until today i go on msn and in 7 minutes I've used 60 or so MB. i know that isn't a lot but before i could use msn in the background and use only 5 or 6 mbs. is there any reason for the sudden influx of usage?

Also yesterday i did use a lot of usage on videos deliberately if that matters

Answer 1

Background programs may be downloading files, such as windows updates, or your antivirus may be downloading a new virus definition.

But if it lasts over a few hours, it may be the cause of a Trojan Dropper/Downloader.

Best way to see if it's doing this is to download a network manager.