Or restart the Blackberry device in safe mode, in case there is software that is corrupted you have recently downloaded.
When starting the BlackBerry smartphone, safe mode can be used to prevent third-party applications from running automatically. Safe mode is designed to allow troubleshooting or remove any unwanted applications.
To turn on safe mode, complete the following steps:
Remove and reinsert the BlackBerry smartphone battery.
When the red light-emitting diode (LED) light goes out, press and hold the Escape key as the BlackBerry smartphone is loading. See KB05470 for the location of the Escape key.
When the dialog box appears, click OK.
The Escape key is located on the right side of the trackball, above the keyboard on the BlackBerry smartphone. (the -U- reversed error on the right next to track ball and track pad)
Use the Escape key to exit a screen, move back a page in the browser, close a message, or close a menu.
This has helped me....I backed up once the device came up and wipeed the phone clean so I can be sure that the device is not going crap on me