Needs Work... Rated 3 out of 5 stars
First, I'd like to say that you are onto something really good with these add-ons. However, there are some major bugs that need to be addressed. Other users have reported the same problems, but they never seem to clarify which version they were using.
Apparently you offer two add-ons: 'Disable Private Browsing' and 'Disable Private Browsing Plus'
Disable Private Browsing
According to the description, this add-on disables private browsing, clearing history and deleting bookmarks and can only be disabled in Safe Mode. The only problem is, it allows you to delete items from the 'Show All History' window.
Disable Private Browsing Plus
According to the description, this add-on also disables private browsing, clearing history and deleting bookmarks, and it works perfectly, (it does NOT allow clearing history from the 'Show All History' window). However, the problem is, it allows you to easily disable the add-on from the 'add-ons' window.
All you need to do is update the 'plus' version so that it can only be disabled in safe-mode.
Thanks again for creating this add-on. I really appreciate what you've done so far. Of course, their are sophisticated 'spy' programs available, but most parents don't have the time or the energy (or money) to invest, they just want a simple way to be able to monitor what their kids are doing online and you are making that possible for us.