Here is more info, with the hopes that someone can help me figure out why things still aren't working:
It seems that the normal behavior of MediaWiki when editing a page is to, first open this URL:
http://wiki.oxus.net/Main_Page?action=edit
Then this one:
http://wiki.oxus.net/Main_Page?action=submit
and then redirect to this one:
http://wiki.oxus.net/Main_Page
However, with the use of a frameset and URL forwarding, the action to take the second URL, store the contents in the database, and redirect tot he third URL is not working.
The question is, is this fixable? Or do I have to give up on using URL forwarding with my website? It is very frustrating, as everything else seems to be working fine with the URL forwarding. If there is some kind of redirect, it seems I could perhaps avoid the problem by telling it to go to: http://wiki.oxusnet.net/Main_Page?action=submit, or even to http://wiki.oxusnet.net/Main_Page?action=edit in the first place, but trying to do that manually doesn't help at all.
What kills the ability to save pages is the following alteration to templates/xhtml_slim.pt (within the <head></head> tags):
<base target="_top" href="http://wiki.oxus.net/" />
Without this change, everything else works fine, but the URL at the top of the screen always shows the first page someone clicked when coming to the web site, rather than the URL of the current page. This is a serious problem if I expect anyone to bookmark any of my pages. (This is also why this is important to me, as the domain name will always be the same, but the host name may change!). So, basically, I need some other way to fix this problem, one that doesn't break the ability to save pages. (I've removed that line from xhtml_slim.pt, in order to be able to continue editing my site for now. If you access the site at http://wiki.oxusnet.net/ everything works normally.)
(Note, the other two changes to my site are: (1) the addition of a .htaccess file for URL beautification, and (2) the removal of the anti-framesets line in stylesheets/wikibits.js.)
Thanks!
kerim