Hello djnlondon,
I'm having the same problem. I tried to delete the registry entries you pointed out, but I can't find the first one (HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{DBC80044-A445-435b-BC74-9C25C1C588A9}). I assume that I downloaded an update or something that makes my registry entry different. Where can I find the information that I need to figure out what entry I am looking for? Also, you said to look for all Java information. What information are you talking about?
The other two you pointed out deleted 1 of 2 Java programs I have. I can't remember what the other one was and since it is deleted (thankfully), I cant look it up. Although, the one still remaining is the Java(TM) SE Development Kit 6 Update 26.