I use a windows 2008 R2 dedicated server. Recently I'm in a weird problem. I host almost 15 sites in that server.All works well and the average cpu load remains 10-15 all time. Recently one of the sites starts troubling me. When it starts, the Cpu reaches 99-100 and all getting stopped. When I stopped that site and and its application pool, the server come back to normal way. This isnt a over traffic problem.Even when I point the hosted files to another domain, that site works well. Such as, My problematic site is abc.com. When I point the directory of abc.com to other xyz.com, no problem occurs. But starting abc.com hangs all things. I find that php-cgi.exe and mysqld.exe cause that damage, but same code running under other domain remain intact. ANd again this is not a trafic issue, as no sooner than I had started abc.com, cpu reaches 100%!!! Please suggest something to get me out of this.