Hi there Sorry for this long post but I thought Id share my recent experience with you and hope for some constructive feedback from you fellow forum TDM users! In another post a few days ago I asked for suggestions from fellow Forum members and got some good advice thanks.Bear In mind however that I have been using Logic TDM since 2003 so have a reasonable knowledge about the Logic TDM subject-I managed to Downgrade from OSX 6 Snow Leopard to OSX 5 Leopard-The whole process was a nightmare in itself-Thank you apple for being about as much help as a chocolate fireguard-Anyway that aside I ended up with a brand new Mac Pro with 8 core Xeon 2.26 dual with 10 gig of ram- with OSX 10.5.8 installed and raring to go Ok I Installed Pro Tools 8.0-Updated it to 8.0.1cs1-I installed every single plugin that was appropriate-This took over two days-I then hooked up the new Magma PE64r Chassis with the five HD cards(3 of them Accel)-Apart from a slight blip when Pro Tools crashed upon the first launch I got it running okay-virtually perfect infact-This so far was a success.Then I installed Brand new out of the box logic 9.0- I updated it to 9.0.2 First I launched ProTools again to check that it launched my Autoload template without any hickups-Again it was rock solid. I then launched Logic 9.0.2............................ It did the obvious au manager stuff-it took a good 10 minutes or so before it loaded the program-O Bye the way-Speed was deactivated in the au manager-It said it was not compatible-But that aside logic booted up okay-I then activated DAE (I left DTDM out of the equation because I believe it will not work correctly with my expansion chassis) I rebooted logic to launch the TDM setup-It booted okay-I then setup the Digidesign hardware within logic-I use an Digi 96 box-an apogee AD8000SE and an apogee AD8000-This gives me 18 outputs digitally and 16 outputs analogue-Ive used this amount of outputs regularly on my G4 for years! I then went about setting up my Autoload environment 32 x stereo DAE tracks 16 x stereo DAE Aux returns(for reverbs etc) 9 x stereo DAE Master output faders Quite a few more bits and bobs did a save-Then a reboot-then decided to try out a few TDM plugins to see how far I could stretch the TDM without it getting hot and bothered-I ran a good few instances-for an example-4 TC MD3 s 5 x TC VSS3 5 x TLA spaces 8 x Indigo viruses 12 x TDM EXS24 samplers 5 x Reverb Ones 3 x Pitchblenders 4 x echo farms Loads of waves platinum bits say around 15 About 6 x sonnox Dynamics 3 x Soundtoys filterfreaks By now the whole logic session was becoming unbearably slow when I went to a new insert on a channel It would take ten seconds before it would open up my TDM plugin list - It never did this on my G4! when I ran Logic 7.1 with ProTools 7.2! Eventually Logic Quit ! (It did save the session though!) I rebooted it then thought -well I maxxed it out- so fair enough- but it didnt seem to run much more than my G4 setup when I ran A core card and just three accel cards inside the computer! I then went about deactivating the plugins one by one-after deactivating around half a dozen or so the program began picking up pace again and letting me do things faster-So my observation so far.........Logic 9(on a Mac Pro Xeon) is worse than Logic 7 (on an old and trusted G4 Dual 1.42ghz) I deactivated all TDM plugins and resaved my AUTOLOAD song then I started to setup my CoreAudio bits I launched a Refx Vanguard and a Refx Nexus and an EVP88 an ImPoscar synth and a few more bits and bobs-Specrasonics Stylus RMX- Again Logic started to slow down again in performance-Graphics were slow to respond not unbearable but not good enough on a new 3k computer! I had not even started to max this system out yet-Im convinced that the DAE is creating a major problem on this platform-Yes it is useable and I can probably run a serious amount of tracks etc for my mixes but I was expecting something a bit more rock solid as a day to day workhorse Any suggestions? Is the DAE 8.0.1cs at fault here? should I try a different CS update or am I pissing in the wind here?