Issue with wireless data usage

[jlc1978]

For some reason, my MBP (running Lion) burns data like crazy. For example, I went from .4GB to 4GB in little over 8 hours with no use but checking emails and web surfing. No streaming video, no downloads, etc.

I am not sure what is casuing that use - maybe a background app? Any suggestions would be appreciated.

Running Lion with VZW 4G modem. It did this with 2 different modems so I don't think it's a modem issue.

 

[GGJstudios]

Launch Activity Monitor and change "My Processes" at the top to "All Processes". Then look to see what processes may be responsible.

Rubbernet monitors your Mac's bandwidth usage

 

[jlc1978]

Launch Activity Monitor and change "My Processes" at the top to "All Processes". Then look to see what processes may be responsible.

Rubbernet monitors your Mac's bandwidth usage

Thanks. I'll check out Rubbernet

Found the problem - Outlook was constantly u/l and d/l to the tune of 1 MB / sec; which is about right based on VZW's data use estimates.