yes i have noticed this aswell (NO RESPONSE but beeing fairly fast anyway)...
can it be because of SPAM EMAIL?
can it be because of BAD TIMES?
i have no idea but its sure annoying, when i go ans buy something then i want service, i dont care if its here within 5 days as thats not service...
kdh was simmilar until they got the response system (which u have to be logged in to see)..
iospirit has no service either anymore (also lame LOG ON system) , i am pretty sure all of theese is because of SPAM EMAIL and its pretty UNPERSONAL stuff ;(