Removed the LD_LIBRARY_PATH lines entirely since I've not seen any ill effects (haven't tested much either, but they can always be replaced). Added logic to setup MIBDIRS and MIBS for easier commandline snmpeeing.

version 5.0
set nocompatible
set autoindent
set cindent
set mouse=a
set smartindent
set smarttab
set tabstop=3
syntax on
set sw=3
set bg=dark
set textwidth=78
set sm
hi Normal guibg=black guifg=white