And if you do, heres a fix to address the lost home folder issue

http://reviews.cnet.com/8301-13727_7-10356505-263.html?

How to restore Lost home folder after logging in as guest in Snow Leopard

Be aware that
Snow Leopard
seems to have a problem with how guest accounts are handled on systems
that had them enabled before upgrading from Leopard. In several cases,
people have accidentally logged in to their guest accounts and upon
logging out and back into their normal accounts have found their data
missing. We reported on this problem in the past, but here are some extra options for restoring the lost home folder from a backup.