Permanent background processing again

[DigPeter]

As reported in the bug thread at https://www.photools.com/community/index.php?topic=2038.0 I have just added some 33000 images to an existing database. 

I am now experiencing the same behaviour described in my post of last year: https://www.photools.com/community/index.php?topic=818.msg9163#msg9163 .

The database is continually going through a cycle of reading, adding & updating often followed by a "tip" that this has finished, only to start again.  Each time this happens with a variable low number of files: e.g. 6, 22 etc.  IM has now frozen with 0 files in the queue and the statement "Reading metadata (100%)" at the bottom of  the work area.   I had to use the task manager to exit the program.  The log file is on dropbox at https://www.dropbox.com/s/uxwih0s0m25iixz/IMATCH5_LOG.zip .

@Mario  Please let me know if you want this added to the bug report mentioned above or as a new bug.

[DigPeter]

After optimise and compact, IM is now performing more satisfactorily.  But I have just had another "no response".  I had been applying labels, deleted one file and had written back metadata.  The blue 'busy' circle appeared, would disappear and reappear when ever I clicked on the window.  The background processing icon at the bottom of the window remained visible.  Eventually the "no response" dialog came up.  I let Windows (7) try to resolve the problem, but eventually IM closed.

I have added the log file to the dropbox link given in the last post.

Later
Opened IM and assigned a keyword (Slide show, via thesaurus to 161 files.  Created new data driven category (South Africa + Slide show).   Write back metadata.  The write back took about 3 minutes and subsequent updating took 5 to 6 minutes, while the system was locked.  Log file added to link.