In the years I've been on this list, I don't count the number
of times when newbies have come asking, in essence, "Why
doesn't Vim behave as advertised?" and mswin.vim (which they
unknowingly were sourcing in their vimrc) was the reason.
Or the converse, where someone will ask "Why does vim behave
differently on Linux/Mac/whatever than it does on my Windows box
that I've been using for a long time?". Plenty of those come
through on the list too :)
Maybe mswin.vim should create a menu option called "make vim
behave like it should, not like a Windows app" that opens all
available vimrc files and nukes/comments any references to mswin ;)
-tim (who also can't count the number of times mswin.vim has been
involved in the answer to a post on the list)