About a month ago, WordPress 4.2.1 have a serious security bugs, and require immediately action to patch it to WordPress 4.2.2. As per the instruction, update the version 4.2.1 to the latest 4.2.2 and resulting I can't login to my blog since May 27.
I'd try couple of way try to regain the access, and no luck at all. At the same time, a friend of my suggest me to look into GHOST for my blog; it is light weight and some how powerful enough for my task.
While I trying to recover all my previous articles, I found that some of the articles are some how "out of date" or "no longer applicable", for those articles, I decide to let it go, and not bring over to the new sites.
Hence, this is the results of using GHOST, and this blog is back to live again!