I've had to revert it back to factory settings - it's a 3yr old Acer 5702.
Problem I had initially was getting it to connect properly to my router wirelessly - I could connect, but then couldn't get the laptop to connect to Internet sites. Network and sharing centre was showing the laptop connected to my router, but then not to the Internet.
I eventually, after much grief, managed to get this resolved by installing new wi-fi card drivers for the inbuilt Atheros card and managed to get data flowing.
After the inevitable zillions of updates, I then reinstalled Office 2007.
Some time later, when I tried to get web pages up via Firefox or IE, it would appear to connect to the site, but then just sit there doing nothing. I can ping numeric sites and can also ping named sites, so I have DNS working.
I've been tearing my hair out last night trying to sort this out - there's no aftermarket firewall blocking traffic and the Vista one is turned off.
If I connect via an Ethernet cable, all's fine - hence it's got to be something to do with the wireless card driver/settings?
Before I end up reverting it AGAIN, any suggestions on what might be causing this?