MAC OS X is downloading something

[peto01]

How to find out what app is downloading data? I turned off all apps and it is still DLing 2,4MB/s.

 

[spidey3]

1) Use iftop [http://iftop.darwinports.com/] to find out which hosts / ports are the source of the bulk of the traffic.

2) Then use lsof to figure out which process is receiving on that local port number.

[if anyone knows a way to do this without installing and using iftop, I'd love to know...]