Hey, I've been having a problem recently with one of my computers getting extremely low speeds at some points (about 3 mbps or less), and other times, it goes back up to full speed (11-14 mbps). It's connected via wifi, and my other computer, connected to the modem through an ethernet cable doesn't get these problems. I know this sounds like a typical poor signal problem, but the weird thing is that it had been working perfectly fine for months, and a few days ago, this started happening for no apparent reason. My adapter is an 802.11g, and the signal is perfect according to task manager. I read somewhere that it may be caused by AMD quick stream, but I've checked and it doesn't seem to be installed on my computer.