This release contains a bug that can affect the scalability of the service. Until the proper fix, it is highly recommended to make sure that the "autowatch" feature of the notifications is turned off. Note that starting with XWiki 10.7 (10.7RC1 to be precise), "autowatch" is turned off by default.
You can do that by adding in the file the following lines:

# Disable autowatch until the following issue is fixed:

Get Connected