Upgrade to 2.1.4?
 

I have been using 2.1.3 for some time and it works fine. We recently move to a faster web host and have had some user problems seeing thumbnails, and while we are trying to work out what the problem is -- I was wondering if it would be a good idea for upgrade to 2.1.4.

What are the new features and should we do the upgrade?
FB

Query optimization was done in pro version 2.1.4.5 and version changes are listed here.