If it was sam causing the problem would it just effect my PC.

Last night I was about to go on air - my SAM has 2 encoders one for auto and one for my actual show - saves changing the name and stuff. However the net started playing up.

I closed SAM, tried unplugging and re-plugging the router, rebooting PC and so on. What happened is the internet was working but seemed slow, I was talking to someone at first on Facebook Chat and getting replies however Windows Live Messenger couldn't sign in. Then later WLM was signed in and people could talk to me but no sites would loud and then WLM disconnected.

My dad was downstairs on the family PC which had a connection and was working fine. I have tried turning off my security suites (BitDefender Total Security 2011) instant messaging encryption and also the site advisor service it uses (I have McAfee as well anyways) - not sure if this will make any difference though.