Eliminating Serverauth Files

I've noticed an accumulation of files like .serverauth.NUM (e.g., .serverauth.626) in my home directory. After some searching I found this helpful blog post indicating that a change in X11R6.9 requires a change in the startx script I use to launch X.

orr:/usr/X11R6/bin$ diff startx startx.new 
138c138,139
< xserverauthfile=$HOME/.serverauth.$$
---
> #xserverauthfile=$HOME/.serverauth.$$
> xserverauthfile=$XAUTHORITY

By specifying xserverauthfile=$XAUTHORITY we remove the need to create .serverauth files.