While viewing a thread in the Perl/CGI etc. forum earlier, I noticed that I had permissions to Edit / Delete the first post in the thread. The post was not posted by me. All other posts the options did not appear (apart from my post obviously).
I tried editing, and gave me a Permission Denied error. I hit the delete button and I reached as far as a Confirmation Screen but I did not continue in fear that it might actually delete the post.