How can I reboot an application on my Blackberry Curve?

Question

My yahoo messenger app is stuck on my blackberry curve. I accidentally tried to link a contact's address to my actual address book and it's been stuck ever since. I've tried pressing the menu key and it does nothing. All I can do is exit out of the program and then it gives a box with an exclamation point, but no message. So I just need to reboot this application so I can use it. Thanks guys!

Answer 1

Try performing a hard reset on the device: remove the battery from the BlackBerry (while it is still powered on) for 10 seconds, then reinsert. That will reset all programs and should allow you to open Yahoo Messenger after the phone comes back on.