Yikes. I just attempted to enable cache and mem_cache using
sudo a2enmod mem_cache and
sudo a2enmod cache on my Ubuntu lucid server. Now my apache2 server doesn't respond at all. I tried
sudo a2dismod cache and
sudo a2dismod mem_cache but now apache does not respond. Tried restarting apache2 and rebooting, but no dice.
sudo apache2ctl fullstatus gives me:
w3m: Can't load http://localhost:80/server-status
Help! What else does a2enmod change that I can revert back?