I have a quick question, I had a look at the wiki and Im not 100% sure on what the 2g/3g switch does, I assumed that if I was in 3g mode and the connection went idle for x amount if time it would revert to 2g, I have just unlocked my phone to find it sat on 3g mode (it was on 2g when I locked it)

Am I correct in assuming that my phone has perhaps tried to connect to retrieve emails and therefore autodisconnected has seen the traffic and switched to 3g from 2g and once the connection goes idle it will go back to 2g?