This morning, on closing outlook express, it offered to compress files to save space, as it does, and I clicked yes, having done so many times before.
After it had finished, I reopened OE to find every email message in all folders had gone. I had already deleted the recycle bin with CCleaner, so no luck there. I've used a software called "Recovery" by Brian Kato, which found a number of .dbx files, but having restored them to a backup folder, am unable to import them to OE; the message says "no messages were found, or they are in use by another program" (they aren't).
Also tried running a software by Stompsoft to recover email messages; this program is available via a U3 flash drive. It failed to find any messages.
One thing in the "readme" of the "Recovery" program says that recovery of encrypted files on NFTS systems is not supported. Could .dbx files be described as "encrypted" for this purpose? ie is it worthwhile trying CCleaner's "recuva" program for this?
I'm not terribly optimistic. If anyone has any ideas of what to do next that might solve the problem, and or knows why it happened or has heard of it happening before, I'd be fairly interested. Some of those files are important. And of course I hadn't got round to backing them up. And system restore was disabled. I have tried restoring a reg backup, but of course, without the files, no go.
I am not "blaming" CCleaner for this, in case that's how it reads. I think it's something that went a bit nuts in the OE program, but who knows?
Windows XP home, SP2, patched. Athlon 3500+, 2.1GHz, 1G Ram.
Thanks.