hight send data rate, but why?

hi everybody!

noticed today 2009 27'' imac sl sending away lot of data, 30kb/sec - meaning if try quit applications.

can explain me this?

here's screenshot of activity monitor, can see there isn't going on, except hight data rate:

http://dl.dropbox.com/u/1004992/screen shot 2012-02-12 @ 17.39.33.png

 

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  screen shot 2012-02-12 @ 17.39.33.png

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i'm thinking it's possibly 1 of 2 things.

syncserver: process icloud synchronization
or
netsession_mac: p2p utility (akamai) used netflix , possibly adobe.

 

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