Installation dies after URI path
installation protocoll ... Script URI path: /babul/wiki
same problem with me http://mail.wikipedia.org/pipermail/mediawiki-l/2004-August/001151.html and Marko Faas http://mail.wikipedia.org/pipermail/mediawiki-l/2004-August/001154.html
look into this topic 1.3.1 installation hangs up after Script URI path
first we thougth it could be just memory and in your case it still could be but it seems as if by enlarging the php memory limit there cant be gained anything. Even wiht 32 mb
Still I did some debugging and made some findings discribed in the mails linked above which where put further forward be Marko Faas who figured out it could habe something to do with language dependency.
Best Greatings from Berlin Burgy Zapp