Got a strange issue with both CS3 & CS4. We use AD accounts with roaming profiles and network home drives (including network appdata).
When launching all other CS3/CS4 products, there are no startup issues whatsoever and my users are greeted with a typical splash screen whereby they can choose to create a new item or open a recent document, etc.
However, Dreamweaver does not do this in either version. The app loads and functions perfectly OK but this splash screen/interface box does not appear for any network account which is a real annoyance. There are no errors visible or recorded in the event viewer.
This behaviour does not occur with local accounts, whether administrative or restricted.