Hi i think it is the cancel problem after all, going back slighty further in your logs.
Sep 22, 2010 10:06:48 PM: INFO: 0 files are loaded
Sep 22, 2010 10:07:13 PM: INFO: Started to load files from M:\\MP3 Collection Billj - Bon
Sep 22, 2010 10:07:27 PM: INFO: Counted 7,081 files that could be loaded from M:\\MP3 Collection Billj - Bon
Sep 22, 2010 10:07:27 PM: INFO: Loading files has been cancelled after loading 3,643 files
Sep 22, 2010 10:07:27 PM: INFO: Completed loading of 3,643 songs from M:\\MP3 Collection Billj - Bon
Sep 22, 2010 10:07:28 PM: INFO: 3,643 files are loaded
Sep 22, 2010 10:07:31 PM: INFO: 3,643 files are loaded
Sep 22, 2010 10:07:31 PM: INFO: Closed 3,643 files
Sep 22, 2010 10:07:31 PM: INFO: 0 files are loaded
Sep 22, 2010 10:07:41 PM: INFO: Started to load files from M:\\MP3 Collection Boo - Cas
Sep 22, 2010 10:39:52 PM: WARNING: For the file M:\\MP3 Collection Boo - Cas\\Bryan White - That's Another Song.mp3: there was not actually any image data - so the image has not been loaded.
Sep 22, 2010 11:13:22 PM: INFO: Counted 6,421 files that could be loaded from M:\\MP3 Collection Boo - Cas
Sep 22, 2010 11:13:22 PM: INFO: Completed loading of 9,859 songs from M:\\MP3 Collection Boo - Cas
Sep 22, 2010 11:13:22 PM: INFO: 9,859 files are loaded
7081 - 3647 = 3438 songs not loaded in first load
3438 + 6421 = 9859 songs loaded !
So this bug is fixed ready for beta 2 probably out tomorrow