On my website, I am putting together a section that deals with common problems with Messenger and Plus!. Any and all help in identifying these problems and their solutions will be much appreciated.
The address of my page is http://www2.cs.man.ac.uk/~morleyd3/, which can also be accessed from my profile (that address will always be up to date). The page itself is called Common Troubles.

Edit: All contributors will be credited.