I had the same problem before with my Fibe12 at my apartment in Waterloo - I found that if I was on my PS3 and my laptop at the same time, the DNS server resolves at an awfully slow rate.
I switched the default DNS server to Google's public DNS and that worked wonders. Maybe you can try that too
I switched the default DNS server to Google's public DNS and that worked wonders. Maybe you can try that too