Thanks for the log.
I'm not quite sure what it shows. Auto-import is finding a lot of changed files. This means the date modified on disk is newer than the database. It normally happens if an external program changes the files.
There are hundreds like this:
0016037: 5668: Import: AddFile: Changed: M:\Music\(Multiple Artists) - Bacobens Rock Top 500\05 Won't Get Fooled Again.mp3
0016037: 5668: Import: AddFile: Changed: M:\Music\(Multiple Artists) - Bacobens Rock Top 500\06 Light My Fire.mp3
0016052: 5668: Import: AddFile: Changed: M:\Music\(Multiple Artists) - Bacobens Rock Top 500\08 Hotel California.mp3
0016052: 5668: Import: AddFile: Changed: M:\Music\(Multiple Artists) - Bacobens Rock Top 500\102 Revolution.mp3
...
Then about 56 seconds into the run, something submits a bunch of tagging changes. I don't know what. Were you doing some Action Window tagging, or something similar?
Files like:
M:\Music\(Multiple Artists) - Bacobens Rock Top 500\444 Spirit In The Sky.mp3
M:\Music\(Multiple Artists) - Bacobens Rock Top 500\445 All My Love.mp3
...
One possibility is that the cover art system is getting art for those new files and saving them to the tags. However, this would work slowly, I think.
If you wantTo figure it out, I think we need to simplify. For example, you might run auto-import manually once and look at the result. You could also disable auto-import and see what changes.
Thanks.