I've had a linksys 802.11b wireless router for a few years. About 9 months ago, the signal started cycling up and down from strong to weak and back again, probably 5 seconds or so per cycle. It never did this before. The problem is that of course at the lower end of the cycle, if I'm far enough away, it means the network gets lost, which means my range is severely cut down (basically, I'm limited to being in the same room). I've changed channels (thinking it was interference), fiddled with every setting under the sun, the unit's been unplugged and reset, can't figure it out. It's strange that it never did this before. I thought maybe it was my laptop or card but just got another and same problem. Any ideas what's going on?