IN almost all cases, it's a good idea to do a complete manual removal of Norton 2005 using the link below:
How To Uninstall Norton AV and Internet Security 2004 & 2005 (SymNRT)
http://service1.symantec.com/SUPPORT/tsgeninfo.nsf/docid/2005033108162039?Open&src=&docid=2001092114452606&nsf=nav.nsf&view=docid&dtype=&prod=&ver=&osv=&osv_lvl=
After doing the full uninstall, then clean out the Temp folders and the Temporary Internet Files folder and run Defrag to optimize the hard drive..After doing so, Restart the computer, shut down all background programs, then install the new program.
Hope this helps.
Grif
Do I need to uninstall NAV 2005 before I install the 2006 version?

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