I'm a committed Eudora user. Tried Pegasus, but went back to Eudora. Each message folder is in 2 separate files - one content and one index. Outlook with its 'mungle it all together' approach always made me suspicious - too much past experience with things going wrong and causing too many unrecoverable side effects.

I have tried the ME Defrag - it definitely runs MUCH faster.

I DO have an APPLOG directory (WIN98SE) - I have set up a batch file that I run on demand - it wipes there and all known places where *.TMP files breed. I have some apps that seem to have an internal script that says "Fido, piss on the desktop first, even though there is not explicitly in the PATH", and then NEVER clean up...