Changed the setting for ttymouse in .vimrc to "xterm2".
@ -79,7 +79,7 @@ set splitright " New windows goes right
set suffixes=.bak,~,.swp,.swo,.o,.d,.info,.aux,.log,.dvi,.pdf,.bin,.bbl,.blg,.brf,.cb,.dmg,.exe,.ind,.idx,.ilg,.inx,.out,.toc,.pyc,.pyd,.dll
set title " Show the filename in the window titlebar.
set ttyfast " Send more characters at a given time.
set ttymouse=xterm " Set mouse type to xterm.
set ttymouse=xterm2 " Set mouse type to xterm.
set undofile " Persistent Undo.
set visualbell " Use visual bell instead of audible bell (annnnnoying)
set wildchar=<TAB> " Character for CLI expansion (TAB-completion).