So I recently migrated servers and neglected to check to make sure ImageMagick was properly configured; the problem? No users where able to register for over a month on any of my forums...
So I got to thinking, for those who're opting to not use GD (as ImageMagick has a better quality to images, among other items), how about make it so that should the ImageMagick commands not exist on the server have the forum fall back to using GD (perhaps even alert the user to bring the issue to the administration's attention).