Keep Losing Connection To Wireless Router/Modem

Hi, I have an HP NC8430 laptop running Windows XP Home SP2. The laptop
has a built-in wireless adapter which according to Device Manager is a
'Broadcom 802.11g/b WLAN' adapter. On the router/modem front, I've got
a Netgear DG834G which has been working fine with the laptop for the 6
months or so that I've had them.

I'm experiencing weird problems with them just now though - when I
switch on the router is found ok and all seems to be well. I can surf,
etc. ok for several minutes but then my connection drops without any
warning or messages. At this stage windows still tells me I'm
connected to my router however I cannot access its config page (at
192.168.0.1) nor can I ping that IP Address.

If I disconnect then reconnect then it works again fine for a few more
minutes before the same problem occurs again. I've rebooted the laptop
and restarted the router, both to no effect. I've also used an
ethernet cable from the router to laptop instead and this had the
exact same problem.

If I leave a command prompt pinging 192.168.0.1 (ie. -t switch) it
shows 'request timed out' but will then periodically get a reply for
around 10 pings before timing out again.

I've left this overnight but the problem persists. From what I can
tell, my ISP is not reporting any problems in their service at the
moment. Any thoughts what it could be?

Any help much appreciated!

Thanks.

.

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