i have asked this question and so far nobody seems to be able to come up with a reasonable reason as to why my resource file is not being resourced.
:source $MYVIMRC :so ~/.vimrc
au BufWritePost .vimrc source ~/.vimrc
:echo $MYVIMRC == /Users/******/.vimrc.
Any help would be greatly appreciated as a week to having this problem (new mac) i am having to exit vim and re enter.