Internet connection lost after browsing the internet

Hi, I am fairly new to the mac world. (less than two years) And I have a problem that I was hoping someone can help me with.
I have a Power mac G5 dual processor, with Mac osx panther installed. Everything works great, except when I try to browse the internet. For some strange reason it will drop my connection and to bootm I also have a G5 server that I am connected to, but as soon as I lose my internet connection I also lose my connection to my server. Now I know it can't be the router since other computers keep their connection while mine drops randomly.
Our office has a basic setup, computers and server plugged into a switch, the switch goes to the 2wire (router/DSL combo) device. The firewall is within the 2wire and the server's and computers' firewall are disabled, since the 2wire has the firewall protection the whole subnet.
Please help
Thank you
G5 Server Mac OS X (10.3.9)

I had this same issue on an Acer Aspire 5520 laptop with an atheros chipset for which I was using ndiswrapper. Long story short I downgraded to kernel 2.6.24 and that fixed the problem .
Sorry not much help...I have no idea where the culprit is, but it is a very annoying problem.

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Message was edited by: Beluga2

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