Debugging sleeping connection with mySQL/optimize mySQL

Problem: Tasks: 800 total, 10 running, 600 sleeping, 0 stopped, 0 zombie I keep getting too many sleeping processes, but i have no idea how this happen. I stopped apache/sql, a, and restart it, everythings fine. Cycle repeats. what i need is someone who can help me debug this problem and fix it. You might need to check my script for leaks. max_concurrent_connection is 800. website has around 11k unique visitors each day. attached [login to view URL] and [login to view URL] ** freelancer must have expertise in mySQL and wordpress ** freelancer must keep the original files so that if his/her solution does not work i can revert the changes he/she made