It's lonly out there....

Well I have just started flying MP sessions on SB and have found there are not a whole lot of ATC out there.
Am I just flying into the wrong air ports? Just 15 mins ago (21:30L/04:30GMT) I landed in an empty Las Vegas (Mac intl.) air port. Also, when I left Denver (KDEN) the ATC signed off before I ever left the ground.
So, are there servers with more ATC on them or is it just luck of the draw on if an air port is "open"? Or is it more active on weekends?
Thanks,
Flying the lonly sky's....
Kevin "Scotch" McGlothlin
Denver
Am I just flying into the wrong air ports? Just 15 mins ago (21:30L/04:30GMT) I landed in an empty Las Vegas (Mac intl.) air port. Also, when I left Denver (KDEN) the ATC signed off before I ever left the ground.
So, are there servers with more ATC on them or is it just luck of the draw on if an air port is "open"? Or is it more active on weekends?
Thanks,
Flying the lonly sky's....
Kevin "Scotch" McGlothlin
Denver