IIS costs too much memory. ( About 60M on my machine: Win2003 server ).
JBoss easily costs me 45M.
Zope is good for resource. But we may not need versional control at all for our own content management system. And read the source of zope is headache.
On the other hand, pyDS only costs me less than 5M.
If we can use Mozilla Firebird, MySQL and Python to build a personal content management system, it would be a great program for sure.