Fedora 16 "Unknown error" message in User & Group G…

Entering a command using the command prompt of a Linux operating system is very different from the commands that are usually used on Windows platforms. If you are using the command prompt when the error hits you then maybe you entered a wrong command on the command prompt. You must first know the sets of commands used on a Linux operating system before using its command prompt.

If the problem doesn’t concern the command prompt of the operating system, there is probably some other problems on the system. Try checking the computer for any possible errors. Use a disk utility application to check the system. For a much thorough diagnostics on the system, use a disk utility application like Norton Utilities, or Norton SystemWorks.