I finally got mod_perl and mod_dav working together in Apache 1.3.24 - originally I was having lots of core dumps, but it turns out the fix was easy - don't use Apache's expat-lite, use the full expat. I gather this is common knowledge, but it took me a while to figure it out.
WebDAV works pretty well in IE on Windows and directly in Mac OS X. I don't have access to XP, but I understand it can mount WebDAV folders as a drive letter instead of going through IE.
