It appears that when TeaTimer starts the snapshot files are read into memory and maintained there and that they are only rewritten when TeaTimer closes. During system shutdown (or restart) it appears that TeaTimer is terminated and does not have a chance to rewrite the snapshot files.

Suggestion: As a matter of routine maintenance to keep the problem of multiple messages appearing at startup from reoccurring, consider periodically exiting TeaTimer (Spybot-S&D Resident) just prior to powering off or restarting the system.