try to remove the security ... (WPA/psk and tkip)
Or maybe recent update??
You may also try system restore (restore it back to when it is still working..)
Warning: anything you do after that date will need to be reinstall/reconfigured.
I have a wirless pre-n belkin router connected wirelessly to a dell axim x50v. Until just recently I have had not problems connecting to the x50v. I use wpa-psk and tkip for encryption. I have not changed any settings and now when I try to connect with the x50v, it just stays on "connecting" and never actually connects. Any ideas?