Or no security. But let's lock this discussion and keep going in your post at http://forums.cnet.com/5208-7813_102-0.html?forumID=31&threadID=308134&messageID=2855105&tag=commProfileMain;profileBot#2855105
A few months ago my pc desktop was able to connect wirelessly to our home network just fine.
Suddenly, even though I can see the home network and select it, my computer can't really connect. It says "limited or no connectivity" and I can't open web pages. However, I can connect to other random wireless networks that have really low signals, and I can sometimes open webpages that way.
Other computers in the house, including my laptop, can connect to the home network just fine. Why is this happening?!