[weedahoe]

Once your data connection is initialized it does stay on until you turn it off. At least that is how mine does but I have weather that updates every 2 or 4 hours, my IMs stay online and I use Seven to constantly poll and check my mail for me so I need mine to stay on. If I do turn it off, when ever my weather needs to update or Seven polls for new mail, it will turn back on the data connection. This is why I asked did you have any apps that are using data.