ok, this appears to be an issue with a redirect extension and jms2win multisites. IE just blows through the error, firefox intermitently shows it, or the error is at the top of the page, or it does not show at all.

OK

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, [no address given] and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.
HTTP/1.1 200 OK Date: Sat, 31 Oct 2009 13:17:23 GMT Server: Apache/2.2.8 (Unix) FrontPage/5.0.2.2635 X-Powered-By: PHP/5.2.6 P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM" Expires: Mon, 1 Jan 2001 00:00:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Set-Cookie: lang=deleted; expires=Fri, 31-Oct-2008 13:17:23 GMT; path=/ Set-Cookie: jfcookie=deleted; expires=Fri, 31-Oct-2008 13:17:23 GMT; path=/ Set-Cookie: jfcookie[lang]=en; expires=Sun, 01-Nov-2009 13:17:24 GMT; path=/ Last-Modified: Sat, 31 Oct 2009 13:17:25 GMT Keep-Alive: timeout=5, max=99 Connection: Keep-Alive Transfer-Encoding: chunked Content-Type: text/html; charset=utf-8 82a8

please please help and advise. the extension is ReDJ . its a nice redirect extension. he has been trying to help me.

www.sistemistica.it/forum/11-redj-in-eng...-php-pages-help.html

we have had email conversations that extend past the forum posts. it does not appear to be only php related. the redirect works great if we go to a totaly new domian. in the instant case, we go from the MASTER site to a slave site /us for instance. the master is the only place where the extension is installed, as this is the only place where redirects are required. any and all help is greatly needed and appreciated.

an example is www.hi-lite.com/airportMarkings.php in fire fox, you will get the error, every 3 times or so. strange! how can we fix??!

Send us by email the "redirect" joomla extensino that you are using.
This will help us better understand what this extension is doing.

We have tried your URL www.hi-lite.com in both Firefox 3.0.15 and IE 8 and we don't had encountered any problem.

We have found your ReDJ extension and be able to see your error message hidden in the 301 mode redirection.
To see the error message, we have used a TCP traffic analyzer. Otherwise the browser process correctly the "301" html move statement.

We don't know which code add this error message.
The only solution that we see is that you add debuging traces in the code to try identify which peace of code create this side effect.

All we can tell you is that ReDJ redirect to another url with a statement "header" that may not work if another extension has started writte something on the screen before this plugin.

You probably have to check that this is the first plugin that is executed.
Start joomla use more sophisticated algorithm when they have to redirect in case where something is already displayed.

Perhaps that your error message comes form the fact that another extension has display content before the ReDJ plugin.