[ubuntu-nz] I can't see my IP homepage anymore..

[Rod McNair]

Hi All,
	I'm running 10.04 (I have been using Ubuntu since 7.04)
In the last 2 to 3 weeks for some reason when running in Ubuntu I can't
view my IP homepage ( my IP is www.xnet.co.nz ). 
I'm using Firefox and Opera and try as I might I can no longer view xnet
any longer.
I can view Xnet only when I reboot into win XP (which I prefer not to
have to boot that up.) 

Is there some script I can run to see what is blocked or unblock or what
I have unwittingly activated?

cheers
Rod