G'day - Have you reset your router at any time recently? That will have this effect.
Go through your initial router configuration/set-up settings again and re-enter them.......let us know how you get on.
I'm having a few problems accessing the internet. While browsing and emailing works perfectly, most other programs simply cannot find an internet connection and simply tell me that I am offline or there is a DNS error. I'm at my wits end on how to solve it. I really need some of the programs for work.
I'm using Windows XP Pro SP3 on a always on ADSL connection. I'm connected to my router over Wifi using a static IP address.
Any help would be appreciated.
ps. I've added the programs to my Firewall exceptions