I have a wireless network set up at home with a Linksys Wag54g ADSL gateway, a PC connected to it with ethernet cable and a couple of laptops and an ipaq which connect wirelessly.
The wireless network works well with all pc's apart from my Dell Latitude x300 Centrino laptop. This Centrino laptop will access a page on the internet but then cant access another one, or it might get the next page if I refresh. Then it wont be able to get any pages at all! It is slow too.
I have dynamic IP addressing setup and have checked that the IP addresses are not the same. The wireless signal is strong and the connection is still active.
The other non Centrino laptops work well and are quick, the IPAq too.

Is it a problem with the Intel mini pci card that is a part of the Centrino setup?