You can fix the inability to move files to the OS X trash by adjusting file permissions settings.
Creating new files and folders gives them a default permissions set that can allow access to them from other account, which may be concerning at first glance.
The Reset Print System routine in OS X performs a number of adjustments to the print service's files and configurations to restore factory default settings, but these steps can be manually performed or can even be undone, if needed.
Adaptec installer permissions oddity: a follow-up
A debugging error that left some users' passwords stored in plain text in OS X 10.7.3 has been closed in OS X 10.7.4.
A simple fix.
The home folder permissions in OS X are set up in such a way as to provide you access to your files, but only allow other users to see certain shared folders in your account. Every now and then people will come across situations where the home folder permissions are not working properly, and sometimes this can prevent them from logging in to their account and accessing files.
A major flaw in the Apple Remote Desktop Agent (ARDAgent) may allow shell scripts to be run as root.
OS X does not provide a way to monitor XProtect updates, but you can set up a custom script to do so.
Use this quick Terminal tip, via macosxhints.com, to disable that annoying problem reporter when applications crash.