N95-3 (have as back up and use as glorified mp3 player)
Nokia 6620 (stolen)
wow 580 views and no one mentioned an answer I guess people here don't like to help. It tells you to "force close" becuase you probably have a lot of applications running in the background using up your RAM. The Comet doesn't have much RAM to begin with so I would suggest downloading a task kill manager app to keep your RAM free and keep a watch on it.