Changes in the Undo string
One of the more controversial changes in ID CS3 has to do with how the Undo commands are recorded.
In previous versions of InDesign a change in the Preview mode or Show/Hide Guides was not added to the Undo string.
In CS3 that behavior is changed.
If you switch from Normal to Preview mode, that step is added to the list of Undo commands.
I've been teaching at the ADIM X event in San Jose this week, and the change did not make the crowd happy.
Similarly, there's been a thread of the User to User forum where people have expressed their frustration.
I'm not happy with the change. For instance, there are many times I toggle back and forth between the Up and Rollover states for buttons. The idea of having to waddle through all those toggles just to get back to a previous action, is not fun.
I think Adobe needs to change the feature to make it a preference. But even with that preference turned on, I would also like to see a History panel to make it easier to jump backwards in time.