Shoutbox

I'm having the weirdest problem ever... certain pages simply don't want to open... I use Firefox (same problem with IE) and when i try to open some pages it starts to load... but never finds it and gives me the error saying:

The operation  timed out when attempting to contact [webpage]

Now i asked some friends to check out these pages and they work fine for them... why!?

here try it:

http://www.shadysideinn.com/

That doesn't work for me but works for other people. And this is only and example... The same thing happened yesterday with this forum and other sites...

I opened my hosts file and took out EVERYTHING (kept a copy) but same thing. I also opened SpywareBlaster and stopped all protection but still nothing (i had a similar probably with an ad page that was solved by doing the above two things....  but not this time)

This is very urgent... any ideas?