My little Canon PowerShot SD550has been doing this a lot lately.
I'm afraid it's on its last legs.
I think I may ask Santa for fancier SLR camera, but in the meantime I feel naked without a point-and-shoot in my back pocket so I'll have to hop-to and write a few extra articles so I can go make this purchase now.
What camera do you have (SLR or point-and-shoot)? Do you like it?
