Except from an web posting about NTUser.dat... notice any contradictory statements anywhere?

An example of a DAT file is Ntuser.dat which is created by Windows XP system during user profile creation. The file size of ntuser.dat on a fresh installation of Windows XP is only about 256 Kb, but as time goes on the file grows in size up to even 9 GB or more. Thus, ntuser.dat file is a very good file candidate with File Extension DAT for deletion to free up system disk space. I tried deleting ntuser.dat and it seems there’s no adverse effect. A notable effect is Windows XP theme was reset to use the non-Windows XP default ordinary theme.

A special thing about ntuser.dat file is whenever it’s deleted there’s no need to worry as it is created back whenever the user logs into the system. A friendly note, if you’re thinking about deleting NTUSER.DAT.

DO NOT DELETE NTUSER.DAT as you’ll LOOSE your PROFILE SETTINGS

Remember NTUSER.DAT is a required system file and may cause your system to crash. It’s possible though to delete it, but DON’T BLAME me for anything. If you do not know what you’re doing then – DO NOT DELETE NTUSER.DAT.