Bandwidth usage

[fionab]

I need to find a way to track what bandwith gets used by my PC. I leave my PC on overnight not doing anything and the next morning it has used approx 500mb - 1gb of bandwidth. What can I use to see what is using this?
I use windows 7 and have updates set to manual download. I was using an antivirus returnil RVS but unistalled that as I though it was to blame. Any ideas what to check next?

 

[fragtion]

Netlimiter free edition will do the trick

 

[RanzB]

Why not just switch the PC off overnight til you find where the BW is going?

 

[fionab]

I have just got the new netlimiter as the old one did not support win 7 but it does not have stats yet.
I use the PC to stream movies so always on. Need to look at an auto shutdown app.

 

[Pada]

There are a couple of other bandwidth monitoring utilities out there. See http://mybroadband.co.za/vb/showthread.php?t=202445
Most of them only show you statistics for the whole PC & not like NetLimiter does for the individual applications.

You could install Comodo Firewall / Internet Security. I know that its also capable of tracking the network usage per application.