This is happening for quite some. It didn't bother me until I started to receive 500 internal server errors during an add-on installation. I have 60 add-ons, a compilation of simple and detailed ones (don't know how else to describe them) installed on my board. In the past I have installed and uninstalled a variety of styles and add-ons but currently there are also two styles installed which have two child styles. Why is the rebuild process taking such a long time, especially when it comes to rebuilding templates? Is there a way to detect, unused but in the database remaining templates or any other part of junk data that we can maybe flush out? Thank You.