There is an issue at the moment on BE with sites that route via Global Crossing to Cogent, however it's not affecting that many sites
You can get your stats from here if you are using the BeBox
http://192.168.1.254/cgi/b/dsl/dt/?ce=1&be=0&l0=1&l1=0
Are you using wired or wireless?
Are you static or dymanic?
What DNS servers are you using. Web tool here to check
http://www.beusergroup.co.uk/drsox/dnstest/
Be* Unlimited