it has been slightly over 3 weeks since i downloaded the CS5 suite for my laptop and I am not too impressed with the performance on my relatively new Mac (less than 6 months old). i am running:
Model Name: MacBook Pro
Model Identifier: MacBookPro6,2
Processor Name: Intel Core i5
Processor Speed: 2.53 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache (per core): 256 KB
L3 Cache: 3 MB
Memory: 4 GB
Processor Interconnect Speed: 4.8 GT/s
Boot ROM Version: MBP61.0057.B05
the new suite really bogs my computer down even when doing simple things like making animated gifs. i also have had problems with the availability of tools common filters and tools (lighting effects for heaven's sake!) in the Ps 64bit version so i have had to down grade the performance to access them. and in my opinion Dw CS5 makes basic site setup less user friendly. it confused my mid-level students who had become quite comfortable with the Basic Tab; not a great idea Adopey!
i am going to suggest to my students that yes the content aware clean up tools are really sexy, but for day to day use I find that CS4 is a fine tool. it pretty obvious that we will need a few more hardware revisions to make this work smoothly, so my recommendation for the student is to go get a deal on CS4 for the mean time. or buy a really tricked out desktop.