Had a problem with my af100 at an event today... couldn't get it to stop recording... was recording a fashion show and went to stop the camera and it wouldn't. Power wouldn't even go off so had to pull the battery out to stop it... Of course the clip seems to be lost - but I'm worried about it happening again. Anyone else experienced this? Up until now haven't had a problem with this camera and have loved every minute of it... Any suggestions?