Permissions

First of all, if your computer is working normally, don't repair permissions from the install disc. That should only be done as a last resort, for example, to fix booting issues due to permissions. Secondly, getting a few messages is normal, at least for me. I get the usual variety of SUID messages along with other things. All the ones I get are harmless.

If you're getting a message like this: "ACL found but not expected on /Library", that you can fix yourself. A little Terminal command is all you need.

Code:

chmod -N /Library

obviously replacing /Library with whatever folder it's complaining about.