[kubuntu] Ugraded to 12.04 now my internet is inconsistant

view story

http://ubuntuforums.org – Back in 2008 I installed Kubuntu on my main computer with the latest and greatest version and untill last week was forbidden by my wife from messing with what she thought was the perfect desktop. Last week when hulu stoped supporting firefox 3 she gave me the greenlight to upgrade. Installed Kubuntu 12.04 yesterday with no problems except my internet has gone wonky. It'll work for 20-30 minutes nice and fast (faster then it was before the upgrade) then it just stops working and every website I point it at pulls up the error message "server can't be found' the network shows as being co (Hardware)