Sprint Touch Pro suddenly loses signal constantly

[antsin3d]

I got one of the first batch of these released, and it's been a great phone so far (although I must say I might prefer the diamond since I don't end up using the keyboard). Anyway, I noticed that I've been accumulating roaming minutes lately, so I set roaming to Sprint only and to warn me. The result of this has been that I have tons of "dead" areas in the middle of Orlando Florida, like my office where I have always had full strong signal. Has anyone had any experience with this? I haven't done a whole lot of customization on the phone, just the volume and a couple things. Thanks!