Hi: I have posted it on vbulletin forums but they said that is not a vbulletin problem, rather that i continue thinking is a vbulletin problem due, this never happened me before, and i didn't changed anything else on website (i didn't installed any product/plugin for months) and since last upgrade to lated vbulletin from vb4.1.9 to vb4.1.10 i have experienced some MySQL problems, mysql queries has increased a lot. Here is a munin graph where you can see what happened since i upgraded: Anyone is experiencing the same problem? or anyone can help me? i can't continue with this problem due is making heavy server loads at some hours of the day. Thanks.
Did u check whether visits increased via Google Analytics ? If vb 4.1.10 had caused this problem, other users may also face it. Try to disable supplementary plugins one by one for few hours/1-2days and check it.