Another issue I have noticed on my iPhone 4 after the upgrade is that when I'm browsing the web sometimes my page just shuts down. Anyone else having the same issues?

My browser has done this a couple of times, but not on a regular basis. Turning the phone off and powering it back up helps me to get the browser to open.

Your iphone is essentially a computer and not a phone. Like your regular desktop or laptop, You should do a hard reboot every so often to clear out whatever is causing your issue.

I need to get into the habit of doing this. I rarely ever shut my phone off. Whenever I start having issues I remember I have to shut it off.

I'm a little surprised you've been able to get by for so long without restarting your phone once in a while. I seem to have a problem with an app working correctly at least once a week. The only fix I've found is to simply shut off my phone and try again, but at least that usually works.

I wonder if your problem is all part of the whole battery issue that the upgrade has caused. It seems that the phones are doing funny things that don't seem battery-related, but they are indeed, being caused by the battery.