I have noticed that very occasionally, event procedures in my VBA code become 'disconnected' from what is supposed to trigger them.  For example, a command button may have an associated Click() event that works normally for a long time but then for some inexplicable reason clicking the command button in question no longer triggers the Click() event.  If the event handling event is recreated with exactly the same code it works fine again.  I have only noticed this occur when I am developing other code in the project.

Has anyone else experienced this?  Is it just me (it's very occasional) and if so does anyone have any idea what might cause it?