If you are getting error 523, and have already done a battery pull, try this:
Try to reset Pandora in the diagnostic page. To get to the diagnostic page:
1. Launch Pandora. 2a. On trackball devices, hold down the "ALT" key and press the "SPACE" bar 4 times.
2b. On touchscreen devices (Storm), bring up a SureType virtual keyboard by going to either the "new user" or "existing user" screen, then hold down the "!?123" key until it locks and press the asterisk key "*" four times. Note: this will only work in portrait mode (not landscape).
Once in the diagnostics Page:
1. Select "Reset Pandora".
2. Exit, then restart Pandora.