Apache2 and PHP5 no longer working

[kuriharu]

I'm running Debian Sarge 3.1, Apache2 and PHP5. Until Friday, they all worked. On Friday I installed python-pysqlite and PHP stopped working. I've uninstalled that but it didn't help. I've uninstalled PHP5 and reinstalled it; no dice.

I've gone through a dozen tutorials but I'm missing something. Can someone offer some more steps to check?

[falko]

Any errors in Apache's error log? What's the output of ls -l /etc/apache2/mods-available and ls -l /etc/apache2/mods-enabled?