I noticed that my Captivates WiFi signal is weak in a location that my netbook reports 86% (via G). My Captivate reports "poor" and appears to be connecting via B to my router. I am in a spot in my house farthest from my router. Also noticed that my 3G signal appears to be weaker than my iPhone 3G in the same location in my house. The Captivate 3G signal appears to attenuate if I hold the phone at the bottom. I have to put the sim back into my iPhone 3G and check.