I have a problem! On my LAN at work we have abour 40 XP Pro PCs, a Windows 2003 Server, a Windows 2000 Server, and a Sco UNIX Server. All of this is connected by three NETGEAR hubs, a Linksys BEFSX41 router, and a Linksys WAP54G Wireless Access Point for a couple laptops. A T1 provides internet connectivity. We also will have up to 6 VPNs accessing the network for Sales employees who are at their homes. The issue is that periodically (which can be 20 minutes or a few hours), all of the client PCs show on their desktop that they are losing connectivity and then gaining connectivity, back and forth. In the system tray of all client PCs is the tray icon for their NIC cards, which a balloon pops up and shows "Local Area Connection is Connected" then a red X over the icon. This flashes back and forth about every second. The only way I have been able to solve this is by shutting down all PCs and networking equipment and restarting it all. This "band-aid's" the problem for anywhere from 20 minutes to a few hours. This past riday I installed a new router and replaced one of the 24 port hubs in an attempt to solve the issue. 3 hours later it occured again and I fixed it by shutting down and restarting everything. I am at a loss. Please help!