ok i running a 2009 macbook OSX 10.6.8 ,2.0 4gig of ram 300gb harddrive w/250 gb space avl. i use a Wd 1 TB HD plug to firewire for all my songs and video....problem.....Me will shutter and freeze up for about 30 sec. when i load a video but audio will play (i get a gray screen)then for a few seconds then start up, it will do the same when i use EFX. i am using serato 2.3.3..is there a good set up to fix this problem...ME is using the default. is there a setting i should do in serato also? Sorry new to ME....