I was simply raising my concern and concurrence that what occurred to somone else also happened to me. Luckily, this was my secondary computer and I check mails from two computers. This one is read only and cannot truly delete the actual email. That can only be done from my primary computer. So, it had little impact but it did force my email to be cleaned up before I wanted.
I did do a check of any dbx files and the only ones found were the ones associated with my latest Outlook Express account - no others.
I was really trying to raise the concern to the Piriform team to have them confirm.
Again, if an occurrence repeats itself in multiple locations, then there might be something unique in the environment that, together with ccleaner, cause the files to be deleted. If someone from Piriform wants to work with me to further investigate, I would be happy to do so.