I have the feeling that there are hundreds of these files taking up space and slowing things down. Can I delete them with impunity or is that perhaps a dangerous thing to do. Can that make a problem for the various files in. out. deleted in Outlook Express? I do not want to lose those ones.
I am afraid you have lost me - I have no idea why that should be!! Before I posted I too searched for .dbx files and all I found were the ones I posted about!
When you search it should give you the path to the file (you might need to select view>details in the search window) and this might give you a clue what to do with them. It might also give us more of a clue if you posted details of the path of a few of them!
I am rapidly coming to the limit of my knowledge on this one, so hopefully somebody else might jump in.