After updating to Mac OS X v10.5.7, you may be prompted to enter the name and password of a user in the lpadmin group when changing a printer setting or printer control.
This affects Mac OS X 10.5.7 and Mac OS Printing/Fax.
To fix this here are the instructions:
- Log in as an administrator account.
- Open Terminal, which is found in the Utilities folder, in the Applications folder.
- Type this command in Terminal on a single line:
dseditgroup -o edit -p -a admin -t group _lpadmin
- Press Return.