A little more advanced tip over at androidcentral.... if you have a mis-behaving app on your android phone, the solution is to often clear cache or data.... here's how to do it.
Read more at www.androidcentral.com
Apps sometimes can misbehave. Before you go reaching for that task killer (don't do it!) here's something else to try. Above is the screen you'll see if you go to Settings>Applications>Manage appliations and tap on an app. You've got a bunch of buttons and numbers. The top buttons are pretty self-explanatory -- force stop makes an app quit. Uninstall either uninstalls an app -- or if it's permanently loaded onto the phone (like the Android Market should be), you'll have the option to uninstall updates.