Shoutbox

I used boss protection but in the Plus options I disabled the Double Click option to unlocking it, but I forgot which is the other option.

There are 3 Options:
- Double click
- Ctrl + Double click
- Custom hotkey (default Ctrl + Shift + Space, but you may have changed this)

If neither of those work, you can always go to the task manager (Ctrl+Shift+Esc) and end the msnmsgr.exe process. Then you just start up Windows Live Messenger again as normal and change your MsgPlus preferences so that you can double click to unlock.