[moonmonkey]

This is very strange.

My girlfriend connects to my router with her powerbook and everything works perfectly.

Then suddenly this morning she can't connect to the web (safari or IE), she is still connected to the wireless network, the really weird thing is that she can type in RSS feeds to Safari and they work fine!

My computer is plugged directly into the same router and it all works perfectly.

Can anyone help? (I think it is an OS problem, as my PSP connects to the web fine through the same network).

[Goldfinger]

Try resetting the router. Pull the power plug and put it back in. If that doesn't work then you're pretty sure it's some kind of OS problem. Unless somebody/something changed some settings in the router that is. But it happens from time to time that the router screws up and a reset always helps.