Please upgrade to 2.3 here.
The 2.2 and earlier branches are no longer being updated.
Members can edit and delete Admin's Posts?
I was just testing with the roles and permissions of members, and despite it saying that "They have no control over the application or other members.", I find the it rather untrue.
I created a user, giving him permissions to Edit and Delete comments on a certain forum/discussion. I was able to Edit and Delete posts created by my Admin account without a problem.
Is this intended, or is this a bug, or am I missing something?