Hi, I am not sure if this is the right place to post this but here we go... I have a MacBookPro v.10.5.5., 2.33 Ghz Intel Core 2 Due, 2GB ram with Leopard as OS. Since the install of Leopard, everything has been smooth, no problems with ProTools or ANYTHING! Untill yesterday.... I am not sure whats gone wrong but, recently i imported some big wave files into one of my ProTools L.E. 7.3 sessions and ALL HELL BROKE LOOSE!! Ever since this import (which sholdnt be be of any problem, cause i have done it before), my ProTools has not been working properly, AT ALL!! Every time i try to load a session and start my work, either listening to a track or record these problems occur: 1.) Either running and NO SOUND! 2.) Either freezing with glitches 3.) CoreMIDIServer (not responding) And then these messages popup: A.) A cpu overload error occured. If this happens often,try increasing the "H / W BUFFER SIZE" in the playback engine dialog, or removing some plug-in (-6101) B.) You are running out of CPU POWER. Remove some RTAS Plug-ins or increase the CPU usage limit in the playback engine dialog. (-9128) I have tried screwing around with all the Playback engines and Buffer sizes and ALL of that - and still nothing, i have the same problems!! This is SUPER frustrating, and super annoying and it really a drag because i have to record important stuff, and i cant.... I also read on different forums that it works if you remove the CoreMIDIServer plugin (library>audio>midi drivers> and delete the digidiomididriver.plugin file.), but still the same... its not working!!! I would more than appreciate HELP here! This cant be true, i have bought something that is not working anymore all of the sudden and out of the blue... this to me is VERY STRANGE!