If, like me, you spent the last few days wondering why your fancy web-based image manipulation suite suddenly won’t manipulate your images, then take a look at the /var/logs/messages file.

If you see a load of audit(436214532617:0) type messages, then you have that damned bastard of an idea, SELinux installed. SELinux stands for “Security Enhanced Linux”. In my case, that translates as “Broken Linux”.

You can turn off SELinux by typing “setenforce 0” as root.

My recommendation is to add that to the end of /etc/rc.local.

</rant>