Still Hacks?

[Andreas]

Originally Posted by tehste

But if I had a plugin installed that messed up and I went to vbulletin.com they could tell me to disable the plugin and then could support me. Has the penny dropped yet?

We could not only tell you to disable all Plugin before asking for support, you will be told to do so if there are problems.
If the problems does not disappear after disabling all plugins/using standard style&files you will get support.

This has always been the case: If you had problems with a hacked board, you had to use unmodified files before you can get support.
The plugin system just makes it a bit easier.