"mIRC does not lock, it opens if someone d-clicks the icon."

ok so hidden into the tray etc etc etc , but low and behold it wont stay down there with the enter the password screen if u click on it.

And again i say this is going to be becuase the [HKEY_CURRENT_USER\Software\mIRC\LockOptions] is a user profile specific registry key, so is still unset when someone else logs on.

Just amagine if it wasnt, BOB logs on runs mirc, locks it, then powers down the pc, MIKE starts the pc up logs on and runs mirc, minimizes it, and then discovers its locked!