Was it a single short beep, or multiple longer ones?
It's normal for it to beep once when powered up, but if it's a Beeeeep Beeeeep Beeeeep sort of beep your magnetron is dead and you need a new microwave
Ryan, don't take Speedtest for anything other than a very rough guide (and even then run the tests off several of their servers - some appear to be running of 56k modems:p).
I ran a series of tests on multiple servers, run by multiple companies, Speedtest.net reported me as having something like 4mb, other sites reported between 13 and 18mb, all within a 15 minute period (with the 18mb coming straight after the speedtest.net report of 4mb or whatever it was).