WordPress Database Error: [MySQL Server Has Gone Away]

Ever encountered with this WordPress MySQL error? MySQL Server Has Gone Away. And then your blog sidebars will refuse to show posts links, tags, recent posts, recent comments etc. I got this problem over and over again and I thought that I was using heavy plugins and MySQL query was timed out being very long. I searched for some solution but just found this answer that if I will use long query, MySQL server will be timed out and will be gone away. Funny!!! But I was hesitating to use more plugins and actually using limited options and other limits in existing WordPress plugins in my blog.

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