Mrz 12
After upgrading from php 5.0.4 to 5.2.5 on my server, I got a blank page as output several times. In dev mode, the error message said, that a creole file could not be loaded. I had to change the include_path value in the php.inito get it working. I just added "/usr/share/php/pear/symfony/lib/vendor", then the error was gone. Depending on whether you installed your symfony via pear or via svn, the path has to be changed of course.
Finally, don't forget to clear the symfony cache (symfony cc).
