Re: Changed routers, now wireless not working!
I think it's a router issue. These things are notoriously unreliable. Check here: http://www.dslreports.com/forum/remark,7069184 Only 36 pages of comments.
I used to have one and struggled with it for years. It seemed to return to life when it was power-cycled, that is, unplugged, count to ten, (One-darn it, two-stupid router, three-piece of garbage, etc.) and plug it back in.
"Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.