I was wondering about the lockups at first, since I didn't experience it. When I did, I noticed something interesting. The lockups only affected the management interface. When I accessed zope as an anonymous user (via another browser, of course), not only was the response instant, but the management interface "unfroze" as well. Could this be a threading issue? This is Z-2.0b2 cooked on Solaris 2.6, Python 1.5.2, w/ egcs-1.1.2-release. Hope this helps.