Originally Posted by MattSYD
My local ISP has now been taken over by a nation-wide ISP and so I had to change my dial-up number. Funnily enough, when trying to book Qantas flights after dialling up with this new number, I can't usually get a response from the site. However, when I changed my dial up number back to the old one, it works perfectly everytime.
Having worked for a national ISP whos hobby was to buy everything that moved [and what a great OzEcompany it was....] my advise is to confirm with your ISP what proxy and DNS they want to you have.
If all you've done is change your dialup number, even though they won't have told you, you'll need to change your proxy and your DNS.