It is not a specific MIDI clip, it's random. It happens with every live pa set and track I have, with HUNDREDS of midi clips, at least 100 each set. So yeah, suffice to say that deleting them is not an option.
After an hour or so (sometimes longer), the patches just start changing on their own. The only additional info I can add is that it usually happens after I stop and start the session. If I leave Live running, it's usually fine.
I own live 8, so it is not an issue of WaReZ doing strange things; and every other app or plug-in on that computer is licensed. The only other plug-ins I would be using ... and not used with the Virus ... are SuperwaveP8, Izotope Trash, and MiniMogue (Free Moog Model D plug-in). I'm nowhere near utilizing even 20% of my processor or RAM either.
It is very strange. Luckily, if I leave it running it is fine; so i'm not crippled ... just annoyed.