I am running CS5 AE v10.0 on OS X10.5.8 . 2x2.66 Quad Core w 16GB of ram!
Still running slow even when just updating windows. I have played with several settings for memory allocation: right now 3GB reserved, 2CPU's other apps, RAM allocation per background CPU 3GB.
Any other suggestions? I had it at 2GB per CPU, was running slow, now trying 3GB.
FCP 6.06, OS 10.5.8 2x3GHZ Quad-Core Intel Xeon, Kona LHe, Dulce Duo-eSATA 8 Drive, 4TB Raid.