How come when ever I open the App Store on my iPhone 3GS it always ask me for my username/email and password when I just entered it 5 minutes ago. Anyone know a fix for this or have this issues?
I think that is just the standard safety device on itunes that will prevent someone from buying 4000 apps and songs if you were to leave it open on a computer. So it's really not an error, just an annoyance.
Try checking out your settings. Have it so that instead of constantly asking for your log-in, only ask for it when you want to buy something.