I have been using wordpress for a few years. The latest upgrade 4.6 seems to produce unusually large number of issues - none of it with the wordpress itself, I might add.
The issue seems to be with the plugins. I found issues with Media-Grid (Quickly fixed by the brilliant developer), WP-CRM (Blank screen on logging in after upgrading to wp 3.6 - I am still sorting this one out) and Comprehensive Google Map Plugin - I had to hack it to make it work.
Is anyone else encountering issues?