Inspire suddenly doesn't want to connect to my wifi

I've had my Inspire for about two months now, with no problems with the wifi whatsoever.  Earlier today I left home, used some data while out and about, and when I came home, my Inspire will not connect to my wifi.  When I go to 'settings', it shows that it is scanning, connecting, obtaining the wifi address, then then it disconnects.  It keeps repeating the cycle.  I've shut it off, I've taken out the battery for a moment and put it back in, and turned it back on, I've tried 'forgetting' the network and then re-entering.  Still the same problem.  This is the first time something like this has happened. 

I don't believe it is my router; my computer and my iPod both connect with no problems at all.

Any advice?