When I try to install MediaWiki on my Debian Server i always get the error:

# PHP 4.3.7: ok # PHP server API is apache; ok, using pretty URLs (index.php/Page_Title) # Have XML / Latin1-UTF-8 conversion support. # PHP's memory_limit is 20M. If this is too low, installation may fail! # Have zlib support; enabling output compression. # Found GD graphics library built-in, image thumbnailing will be enabled if you enable uploads. # Installation directory: /home/www/web2/html # Script URI path: Warning: $wgProxyKey is insecure Can't find a writable temp directory for the XHTML template. Check that the TMP environment variable points to a writable directory, or that the default temp dir (/tmp) exists and is writable.

/tmp exists and has the rights 777 (read/write/execute for all).

I already read through several threads not being able to figure out where _my_ problem is ... probably you can help me getting MediaWiki to work ...

thanks for help

Thomas Uhde