Greg Conway writes:

Interestingly enough though, when I later restricted my access to part of a site with a combination of an exUserFolder and a badly-placed SiteRoot, the emergency user couldn't help me....

Is there anything more powerful than this? I've restored that part of my site for now, but just for future reference! The Emergency user can cure any permission problems (at least, this is as it should be). But, it is powerless against traversal magic (like that of SiteRoots). The SiteAccess product (SiteRoot belongs to it) comes with its only rules to inhibit the magic. Read the corresponding documentation.

Dieter PS: Please stay on the list (such that I can often write: "search the mailing list archives).