I think it would be a good idea to have an option in the configuration menu to
"Clear Latest Clips on Computer Shutdown"
Often I am copy/pasting data which I do not want left in open view such as passwords. So, before closing my computer I need to go to ClipClip Manager and "Clear Latest Clips" as I don't want anyone else who has access to this computer to find my sensitive data in open view.
If its possible, you may want to allow a couple of options, such as:
"Clear Latest Clips" - 'On Shutdown' or 'On Sign Off'