Here's the weird thing -- this only happens on my home wifi network. I do not have these problems when I am at work, or even if I use the wifi at Starbucks. But at home, the mischief begins. Symptoms on home wifi (which is WEP encrypted): I can download and install anti-virus software (Malware, Trend Micro, McAfee) but I cannot update -- these are blocked. I cannot download any MS security updates AT HOME. I downloaded and ran the MS updates at work. Nothing was found, including Conficker -- which I suspected because of these symptoms. In addition to my laptop, there are 2 other PCs on my home network -- all show the same symptoms. I've run all scans on all PCs and all say they are clean. But these symptoms persist. What is going on? Is it possible for a worm or a virus to live on my wireless router?