There is a parameter you can setup how long to process the request in php.ini (mysql.connect_timeout ). But I think you need to be the administrator to do that.
So I would suggest you to use the same server for php and mysql (your own server and you can change all the parameters as needed).
I think the second point can move in the straight line is better than your previous design: restricted to x-axis.
I would suggest move the "hint M?" lines to lower-right instead of upper-left.
And string are overlapping for other hints (you can add some constant to the y-coordinate for strings).
You are getting better and better each time. Keep up the good work.