if i want to explain you the difference of between i use LiteSpeed and After it i can tell you that .
when i used Apache my Server Load was about 1200 !!! Yes 1 thousands and 2 hundreds !!
its unbelievable !
one of my friends told me hamid lets use Litespeed its must works gr8
and i tried to use litespeed and my server load ride now is under 1 :P
just because of LiteSpeed Technology !
when i installed that version my server load didnt have any problem it was about 5 -7 but pages loaded very slow , but LiteSpeed Gr8 support helped me a lot and they fixed all of the problems !
they answered all of my Emails just in couple of mins
i dont know how to thank them , but this a just thing that i can do to thank them :X
i love litespeed .