Yesterday I deployed a fresh blog installation using WP 3.0.3.
After configuring s2member, I noticed that when clicking on my Modify Profile link
which is configured to redirect to the special s2 edit, rather than redirecting to the special s2 profile edit
(http://xxxxxxx.com/?s2member_profile=1), it redirects to my site's main static page. I've enabled this redirect (Yes) from the pull down menu found under "Menu Profile Modifications".
What might be the cause for this behavior?
It appears that everything else in the s2 installation is working fine.
RESOLVED: member profile redirect problem stemmed from unknown conflict with Yoast SEO plug.
After replacing the SEO plugin with WP-Supercache, the redirect problem disappeared.
The free version of s2member appears to work just fine under WP303.