Scanning for new and changed stops the music ?

This usually happends during databse cleanup 2 ?

this is new since sqlite

Sorry to say since upgrading to 27423 ( from 27129 )the scanner seems completely broken except for the auto detection which is only half broken as it found a third of my latest added album ?
so i can not test this yet have to wait to scanner starts working again ?

Version: 7.4 - r27423 @ Mon Jul 6 04:01:26 PDT 2009
Hostname: hal.home.lan
IP: 192.168.1.5
HTTP Port: 9000
OS: Red Hat - EN - utf8
Platform: i686-linux
Perl Version: 5.8.8 - i686-linux-thread-multi
Total Players Recognized: 3
 
Library Statistics
Total Tracks: 18,478
Total Albums: 1,461
Total Artists: 1,167
Total Genres: 148
Total Playing Time: 1463:59:37

One observation maybe not relevant, since the sqlite versions my servers taken a performance hit it hovers 100% cpu for almost a minute everytime Sqeezebox server starts ? every action that includes the dB seems to use a lot of cpu but not using much memory ? this was not the case with MySQL version