Callback needs to be called more often

[GoogleCodeExporter]

The user callback that displays progress is not called often enough to prevent 
a GUI application from going into "not responding" mode.  The total percentage 
complete goes to 15% very quickly, then stalls for a couple of minutes and 
jumps to 90%, then finishes quickly.  In order to be useful, that callback 
should really get called a lot more often, so the user doesn't think there is 
something wrong with the program.

Original issue reported on code.google.com by leadwe...@gmail.com on 16 Dec 2014 at 5:45

[GoogleCodeExporter]

Original comment by kma...@gmail.com on 18 Dec 2014 at 11:58

• Changed state: Fixed
• Added labels: ****
• Removed labels: ****