About 3 weeks ago an odd sound began occurring. When most (but not all) web
pages load, I get an odd sound that I would describe as either a whurring
sound followed by a soft and almost silent boom or a "zzzzzzzzz" sound
followed by the same soft and almost boom. I have my popup blocker set so
that it does not make a sound when a popup is blocked. I also went thru each
and every task/sound at Control/Sounds and did not hear the sound I am
hearing when a web page loads. I am running Windows XP SP2, Norton AV,
Webroot Spy Sweeper and Webroot Window washer. The sound does not seem to
impair performance but it is distracting and I am concerned that my browser
may have been corrupted.