Runs wonderfully on my 3GS. I remember TheSpaz moaning about 3.0 being sluggish on the 3G, and his logic made him believe that - as apparently everything has to work on a pattern
rolleyes
- 4.0 would be sluggish on the 3GS in turn. Absolutely no speed issues at all here, the new features work great, only hitch I've had was Safari stalled loading a webpage over 3G the first time I opened it, but a simple close and reopen fixed that. Also seem to be getting better battery life. Very satisfied.