I realized I could run with -d9 option, then I got this in the log-file:
2007-05-28 00:01:40 (b74db6b0): Processing playlists
2007-05-28 00:01:40 (b74db6b0): Starting playlist scan
2007-05-28 00:01:40 (b74db6b0): About to scan /mnt/onetouch500GB/share/hdd/data/public/music/yes/test.m3u
2007-05-28 00:01:40 (b74db6b0): About to scan /mnt/onetouch500GB/share/hdd/data/public/music/yes/Grym_Fusion_2.m3u
2007-05-28 00:01:40 (b74db6b0): About to scan /mnt/onetouch500GB/share/hdd/data/public/music/yes/Grym_Fusion.m3u
2007-05-28 00:01:40 (b74db6b0): Finished playlist loop
Earlier it says
2007-05-28 00:01:40 (b74db6b0): Found /mnt/onetouch500GB/share/hdd/data/public/music/yes/Grym_Fusion.m3u
2007-05-28 00:01:40 (b74db6b0): Adding /mnt/onetouch500GB/share/hdd/data/public/music/yes/Grym_Fusion.m3u for deferred proces
sing.
2007-05-28 00:01:40 (b74db6b0): Found /mnt/onetouch500GB/share/hdd/data/public/music/yes/Grym_Fusion_2.m3u
2007-05-28 00:01:40 (b74db6b0): Adding /mnt/onetouch500GB/share/hdd/data/public/music/yes/Grym_Fusion_2.m3u for deferred proc
essing.
2007-05-28 00:01:40 (b74db6b0): Found /mnt/onetouch500GB/share/hdd/data/public/music/yes/test.m3u
2007-05-28 00:01:40 (b74db6b0): Adding /mnt/onetouch500GB/share/hdd/data/public/music/yes/test.m3u for deferred processing.
2007-05-28 00:01:40 (b74db6b0): Ending song scan
Maybe this could shed some further light to what is happening to you guys?