Norton Disk Doctor...was designed for Win 95/98, systems which lacked the proper tools to diagnose and take care of certain system irregularities/conditions.
I used NSW when I had Win 98 for several years.
NSW or whatever it's called has no place on an XP system, since the tools which are provided either on XP or free somewhere else...do a much better job of maintaining a system than NSW can do within XP.
If you run chkdsk in accordance with the instructions provided in that particular link...and then follow that up with a system defrag, you should be good to go as far as disk maintenance that NSW could provide (at a price).
As for causing problems...Symantec software has been known to cause some problems on certain systems. But, I never experienced any with NAV, NSW, or NIS during my approximate 5-years of using. I stopped using Symantec products when I realized that there were better alternatives for what I wanted to do...which did not cost anything
and were at least as effective as the Symantec products I used.
Edited by hamluis, 08 December 2007 - 05:50 PM.