An important notice for designers using the new Intel-based MacBook laptops, iMacs, or Mac Minis. QuickTime 7.1 causes a variety of freezes with Adobe Creative Suite on Intel-based Macintosh computers. Apple has recently released QuickTime 7.1.1 to fix the problem.
You can download the needed update from the QuickTime download page, or via Mac OS X’s Software Update utility (Apple menu > Software Update).
Note: In addition to these freezing problems, Version Cue is not supported on Intel-based Macintosh computers. The Version Cue icon will be crossed out in the top right corner of your menu bar.
For your convenience, here are all the related Adobe Knowledgebase Articles:
Intel Macs freeze during startup after QT 7.1 install (#333083)
Installation freezes on Intel Macs with QT 7.1 (#333087)
PDF creation freezes Intel Macs with QT 7.1 installed (#33096)
Activation of Creative Suite 2 fails on Intel Macs with QT 7.1 (#329781)
Adobe Version Cue CS2 not compatible with Intel-based Macs (#332794)
Source: This tip inspired by a handy list compiled by consultant Christopher Cole at Forget Computers in Chicago