I normally do not respond to Posts like this, but I felt I should clear up some misconceptions. First off, resetting Preferences does resolve a lot of strange behavior, but it is not always the issue. Reinstalling should be last resort. The most common cause for Freezing, especially when Dialog Boxes are present is first not having the the SR 2.1 installed (and now SR3). Second is an outdated Driver for your Video Card. Always download and install your Drivers from the Chip Manufacturer's Site (ATI, nVidia, etc..) As mentioned, there is known issues with some drivers for some cards. You can rule out some issues if the problem disappears when you switch to SreeD Preview. That indicates that it is an OpenGL issue and most likely related to the Driver being out of date. If none of that resolves the issue, you should contact Tech Support with your System Details, Operating System, etc...

NOTE on nVidia... I had to completely uninstall the Drivers for one machine and reinstall the newest driver to resolve an issue in a different Program. The person from nVidia told me that they sometimes recommend that when updating Drivers, if the user was experiencing Display issues.

ratscloset
aka John