3com Router/Client Problems

Hi,

I'm having problems with a 3com wireless broadband router, OfficeConnect
3CRWDR100A-72 and two usb 3com clients, 3CRWE254G72. All are updated with
the latest firwares and software under XP SP2. WPA is enabled.

If we are playing a game over the lan the network will crash with a cannot
connect message, usually within 10 minutes but sometimes is ok.

Sometimes, when i'm just on the internet the computer will just freeze or i
get a BSOD saying there was a problem with the driver of the usb client. In
both cases i have to reboot. These will happen once every few days.

If i use a p2p network it will always fail within a couple of hours.

I've tried disabling the router firewall and using the XP one but still no
luck.

Does anyone know what else i can try (apart from buying a new network?)