BleepingComputer.com: Wireless LAN connectivity issues

hi,
i have a BTHomeHub and i have 2 laptops... now the internet is working fine on 1 of my laptops, however on my 2nd laptop the internet just stopped working about a week ago...

now i can see the network on "available wireless networks" and i have connected to it.. plus when i hover my mouse over the tray icon in the bottom right corner it says,

"Wireless Network Connection BTHomeHub-73F4
Speed 54.0 MB
Signal Strength: Very Good
Status: Connected"


however using both internet explorer and firefox i cant browse the internet, it just comes up, "Server not found"

i tried reseting the connection and a couple of other things but its really not helping.. its a case of my latop can see there is a network and appears to have connected to it, but nothing is coming through, when my other laptop is connected to the same network and is working fine..?

any ideas or help?

What version of windows? What changed a week ago?