I got my bold a few weeks ago, and at first I didn't really care about the WiFi, but since the Digicel (carrier) EDGE network SUCKS (No 3G in Panama. FML.)
But anyways, after a while I started using WIFI at home and then turning it off every time I went out to save battery, and here's the weird part: Apparently it takes a while to notice it's not under WIFI anymore, so it kind of stops working for like half an hour unless I reset it. I mean, isn't it supposed to automatically switch between WIFI/mobile network when the WIFI network isn't in range anymore?
In those times when the mobile network refuses to work (even though I have full bars) I /am/ connected to the mobile network, it just doesn't work. I know I am because I try the advanced options > host routing table thingy and I get the registration message saying I am.
Plus, whenever I am somewhere with no signal I obviously get the SOS thingy, but when I'm not in an off-signal area, it doesn't go back to normal, like, it doesn't detect the signal unless I turn the mobile network off and then back on using the connection manager check marks thing.