When you open an existing document or create one, InDesign hangs, freezes, or endlessly displays the progress bar.
This is happening to me as well. I literally can't use InDesign at all right now. At first I thought it was the document, but even without any documents open, I can't even get a dropdown menu to open.
Have you been able to fix it yet - I click on anything and then get a 10 second delay before I can do anything else.