Something is using my bandwidth

I've noticed from NetMeter that lately I've been downloading up to 500MB worth of stuff just from idling on my computer with Firefox, mIRC, and MSN up.

So I closed down everything using a network connection except firefox (not loading anything at all) and look at NetMeter and see that it's steadily using about 0.2 KB/s and every once in a while (like 1 min), it jumps up 500 KB.

Scanning my computer doesn't show anything so is there a way to check what programs are using the internet?

 

500 MB :eek
I used netlimiter free edition years ago. It gave stats of apps using bandwith.

http://www.netlimiter.com/download.php (Don't think MG has a mirror)

Not sure if the free version still gives such a detailed report. I did download and run the installer to give you more info - but it has "Known compatibility issues" with Win7


You could try the Pro or Lite versions as they have a 28 day trial period.
Should catch the infringing app if any :-D

Cheers...

 

Are you using Vista?
If so you can view Network within the Resource Monitor to see what programs/services are accessing the net.