NIS 2010 Disconnect from Internet

Hi Guys

 

I have problem with NIS 2010.I start downloading,everything is fine for few minutes(or second:)),but then internet disconnects.After i restart my network adapter and continue downloading again for while.

 

Befor NIS2010 I use ESS everything was working normaly.

 

Does anybody know where is problem please?

 

Thanks a Lot