My smartphone (running WM5) has suddenly decided that it doesn't want to
connect to my wireless router with WPA-PSK (TKIP) encryption, even though
it's been doing this fine for over a year. Randomly, the tab with 802.1x
settings now appears ticked and (worst of all) is greyed out meaning that I
can't change the setting. This has resulted in my smartphone trying in vein
to connect to the router but ultimately failing. The phone works fine with
all other wi-fi points though. I'm at my wit's end with this, my router talks
to my PS3, Wii and Mac fine but for some reason has fallen out with WM5, can
anyone help???

Thanks