the voting pattern and numbering often changes it seems?

 Answer : Yes, I agree to it. There is a negative soul, he/she visiting only to give a negative vote on a daily basis. Through the log, I got the IP address and the other details; Though I could have banned this IP address from entering my site,  but I do enjoy the persons daily visit without fail and taking a lots of time to put his/her negative votes on each and every querry!  See the daily efforts and the time taken by her/him to put this regularly. So who is enjoying more you can guess!! (I can simply change these with a single stroke, but the person has to manually click on each and every question/answer repeatedly but only once a day; let him/her visit daily and put his/her negative vote daily. The person must be having no work to do and wasting enough of life time to do this specific job only, it seems).