Okay, I have 2 desktop PCs. My main PC is directly connected to a wireless B Linksys router and my kids' PC is connected to it via a wireless usb adapter. Everything was working great for quite sometime(2 years) with this setup and my 1.5 mb dsl connection. Both PCs would consistently test at 1.2-1.3 mbps. Now all of a sudden my main PC has dropped off to 400-900 kbps and the tests are very erratic. All tests I have used show similar results. My kids' PC tests the same good speeds as always. I have tried bypassing my router and going directly to the modem with my same ethernet cable, and also using the usb cable connection from the modem to my PC, and finally I have tried using the same wireless usb adapter, that is being used on my kids' PC, on my main PC. All with the same results: 400-900 kbps and erratic. I have used Spybot S&D and Ad-Aware SE to remove spyware, and have done a complete virus system scan via AVG with no viruses found. Does anyone know or have any idea what might be causing this? Is it a software issue? Thanks so much for any help with this matter. Oh yeah, both PCs are running Windows xp with all updates. Doug...