Maintenance Setting to Make Your WordPress Blog Run More Smoothly
http://www.syamsulalam.com/newbie-sec...
For you who want to know more about wordpress technical details and being rather expert on it, I suggest you to go to link above.
Anyway, this short video will show you what to do to make your blog run more smoothly, including delete your inactive plugins, optimizing your theme, etc.
Hope this help, folks!