I am stumpped by this one...

So, WLAN stopped working - as in, it tries to connect once to my WLAN AP (on boot), fails and falls back to GPRS modem. After that not even possible to scan for WLAN anymore - it is like it isn't there.

Anyone has any idea of what might be causing this? I am about to take a hammer to this damn device...

Oh, and the error message is "Network connection error. Try again?"