I upgraded from Ubuntu 11.04 to 11.10 but this resulted in some internet problem in my pc. Whenever I connect it to some network, internet works fine for some time and then stops working for some time then again works. It goes on continuously.
I tried to find solution on google but could not get any related problem. I have both lan and wifi connectivity using a proxy server and this problem occurs with both. Any help in this regard will be appreciated.