[aiharkness]

Couple things up front: First, sounds like you are running your battery down flat or almost flat before recharging. That's a bad idea; especially if you are running the battery down completely. Either trust me or read up on lithium ion battery. And see the article at blackberry.faq on maximizing the life of your battery.

Second, any app that is hitting the network freqently, such as app that streams media content, is going to be a significant drain on the battery, but only when you are using it. Pandora should not have had any effect on your battery after you fully exited it; but only while using it.

So, the likely source of your short battery life now:

1 - You have some other apps that are running (pay attention to those third-party apps that are set to run in the background when closed) and hitting the network repeatedly.

2 - Your battery is failing.

or

3 - Some hardware fault has occurred with the device.

Make sure everything is shut down (except the core BlackBerry apps that are always running and can't be shut down). Do a hard reset, and see what happens.

If you still have trouble, note whether the BlackBerry battery or battery cover is warm to the touch. And note whether there is significant loss of battery charge even when the device is in standby for a short period of time. If so, I would suspect a problem with the BlackBerry, but not necessarily so.

And, if you still have trouble after shutting down all apps, and if you don't suspect a problem with the unit, you might borrow a battery for test, or buy a new battery. If you buy a battery, buy a genuine BlackBerry battery from a reputable source. If you go for an extended battery, buy from a reputable vendor.