Hi all. I'm at my wit's end trying to fix my wireless network, so I thought I'd call in reinforcements. I've got a Realtek RTL8180 wireless card in my PC. It's upstairs in my house, probably about 50 ft away from my Netgear wireless router. For about 8 months, this arrangement worked just fine. My connection wasn't the best in the world, but it was routinely 80% signal strength and above, and transfer speeds/latency were not significantly different from the wired connection. All this changed about 1 month ago. My signal strength plummeted, and it now bounces around (it oscillates wildly, even) 10% to 40%. It is particularly bad when the computer is first turned on; the card usually can't even pull an IP. About half an hour later, I can limp onto the network. From then on, using the internet is a painful experience. Page loads take a minute or longer, if they happen at all. I've tried every possible antenna orientation I can, no go. I've checked for any new wireless networks that might be interfering; there are none. I've tried different channels. My brother's IBM laptop with built-in Cisco card works perfectly in the same room as my box, so I'm sure it's the card in my box that's the culprit. However, like I say, it worked just as well up until recently. What could cause such a sudden drop in performance?