Weird path in rewrite

I have installed vbseo 2.3.2 on vbulletin 3.5.1 (+patch). When requesting a forum URL (forumdisplay), VBSEO seems to rewrite that to the nice format. However, it does include some strange path info into the URL.

HTTP Header recording is as following:

Code:

GET /show/forumdisplay.php?f=2 HTTP/1.1
Host: forum.webhostlist.de
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.8) Gecko/20051111 Firefox/1.5
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: de-de,de;q=0.8,en-us;q=0.5,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://forum.webhostlist.de/show/
Cookie: 

HTTP/1.x 301 Moved Permanently
Date: Sun, 01 Jan 2006 11:43:27 GMT
Server: Apache
X-Powered-By: PHP/5.1.1
Location: http://forum.webhostlist.de/srv/www/show/script-serverseitig/
Content-Length: 0
Keep-Alive: timeout=15, max=88
Connection: Keep-Alive
Content-Type: text/html; charset=iso-8859-1

I am not sure where the /srv/www are coming from. Since they are inserted at this part, the .htaccess (residing in the /show directory) will never get triggered and the server throws a 404. I have checked the config file and there seems to be no option to configure this behaviour.

Thanks,

Carsten