I use Adobe InDesign for book creation. One book I'm working on is made up of chapters with one that is pretty large. The indexing is huge with version/textual variant errata, author, subject, and scripture indices. When I try to work on the index with all the chapters open the program can take 10-20 minutes to compute a change or regen the index. Is this memory or processor related? I can work on other tasks (like browse PB). When I start task manager it says the InDesign is not responding but if I leave it alone it eventually finishes. This happens both on my laptop and on the desktop. The laptop is Windows Home 7, Dell XPS 1640, with an Intel Core2 Duo CPU 2.13, GHz, 4 GB memory. The destop is an old XP system but with comparable or better memory (not sure; but cannot check right now). Any suggestions. If I work on chapters, except for the last, I don't have the problem. With the last it takes 30 seconds or more to make changes even to the text.