After the upgrade I seem to be getting about the same signal strength. At least that's what my signal indicator shows. Now even in areas where I have an excellent 3g signal and I'm browsing the internet I get the network not responding message fairly regularly. It seems like before in areas with weaker signal the browser would keep trying to load the page for a long time but now the phone gives up quicker to the page cannot be displayed error screen. I've updated my PRL, profile and reset all data settings several times. I'm considering going back to ICS if I can't decrease this some. Anybody else having this issue?