Vim arrow keys

Using Cygwin's rxvt and vim 7.1, sometimes the arrow keys produce 'A', 'B', 'C', 'D' instead of navigating. This doesn't seem to happen locally, but usually happens when I'm logged into a Solaris machine.

Adding this to my ~/.vimrc seems to fix the problem. <geshi lang="bash">

set term=builtin_ansi

</geshi>