I just noticed that my 3G icon was missing on my new EVO. Since I had already decided to have lunch next door to the local Sprint store, I thought I'd find out if their net was down. The young lady said another EVO customer had come in with the same problem so it is apparently real at least here in Tucson, AZ. The fix is simple, push shutdown button and select airplane mode and turn off phone. Restart phone and turn off airplane mode and power-off phone. Turn phone on and Voilla! the 3G network is back.
Jim
Jim