I'd say all are equally as bad if you don't know what you're doing.
Try reading up on the registry before you try cleaning it, and even then be careful.
Theres a link in my signigture to a "FaQ" on the registry cleaning feature.
To answer your question though.
(in my opinion)
Least
Start Menu Ordering
Run at Startup
Obsolete Software
MUI Cache (can be less hazardous if you don't use any other languages)
Help Files
Fonts (can be higher or lower, depending)
Installer
Application Paths
Applications
Type Libraries
Active X/Class Issues
Missing Shared DLL's
Unused File Extensions (I put this one as very hazardous because you can accidentally remove .reg, .exe, .dll, ect from the registry without realizing, and believe me its a pain to restore some file associations, especially exe and reg.)
Most
But thats just my opinion, from my experience. You shouldn't /really/ go by that ;-)
Thanks, I had already read your posts and found them very useful.
I agree before I do anything with the registry that I need to know
more, but I am getting tired of nursing Windows and having to
become an IT professional to get it to keep running.
Anyway, I have read where they may be no real performance
gains by tweaking the registry anyway.
I'd say all are equally as bad if you don't know what you're doing.
Try reading up on the registry before you try cleaning it, and even then be careful.
Theres a link in my signigture to a "FaQ" on the registry cleaning feature.
To answer your question though.
(in my opinion)
Least
Start Menu Ordering
Run at Startup
Obsolete Software
MUI Cache (can be less hazardous if you don't use any other languages)
Help Files
Fonts (can be higher or lower, depending)
Installer
Application Paths
Applications
Type Libraries
Active X/Class Issues
Missing Shared DLL's
Unused File Extensions (I put this one as very hazardous because you can accidentally remove .reg, .exe, .dll, ect from the registry without realizing, and believe me its a pain to restore some file associations, especially exe and reg.)
Most
But thats just my opinion, from my experience. You shouldn't /really/ go by that ;-)