From Habari Project
- when installing a new blog I came up with an error about the cache. The installation instructions  confused me with the line: "cd ~/public_html/habari/" because that's not the way my system is setup. It wasn't until I found Rick C's comments  that it made sense which files I was supposed to change permission for.
- when the cache and file permissions are not set for user and you try to activate the Media Silo - the system goes to a blank html page (ie. it doesn't handle the error).
- when installing, the validator won't allow the table prefix "temp01__", even though that is a valid prefix