Im currently running the most recent version of Plus!.  However, Messenger Lock has stopped working.  When I use my ctrl keys, it does not respond, and when I select Messenger Lock from the menu, I get told that I must login at least once to be able to use that feature.  So I log out and then in again, but still cant lock Messenger.  Help please!

Which version of Windows/MSN Messenger are you using? If you are running Windows XP or Windows 2000 Press CTRL+ALT+DEL to open the task manager. Click on the Processes, in this list do you have msmsgs.exe running in the background? If so this can cause the problem because Windows Messenger would have to be started before MSN Messenger for Plus! to hook both properly.