I have created http://www.lifecoach321.com/ for a friend. After solving a pretty permalink issue, I thought my 404 error issues were done. So, I installed Akismet then WordPress.com Stats. Upon checking comments link I received the dreaded 404 error. I also get that message when I click the post title.
I had installed Akismet a few days ago with an API key but deleted it thinkint it was my comments issue. Turned out it was my permalinks. So, today I reinstalled/activated Akismet and it remembered my API key. So, feeling bold I installed/activated SordPress.com Stats. It told me that the API key was associated with lifecoach321.com. I selected to add this blog.
That's when I noticed my 404 error when clicking post title and comments. I deleted both akismet and WordPress Stats but the problem did not fix itself.
Any help is much appreciated.