I normally use InDesign CS but am thinking of upgrading to CS3 and downloaded the 30 day trial. I find it slightly sluggish; also CS takes about 15 seconds to start up and CS3 takes about 50 seconds. The trial version does have some bumph that comes up before the programme but I'm thinking it's probably because the CS3 version is nearly four times the size of the older version. I'm using a 1.67 G4 Powerbook with 512 MB of RAM and looking to upgrade it at the end of the year. Do those of you with newer MBPs find it runs well? I didn't think of this beforehand, but I'm being careful to use only the original CS to work on existing documents as I'm assuming the new one will save them in a format I can't open once the trial is over.