Has anyone had the problem where 'Preview' (the OS X app) seems to NOT work? It just started recently: when ever it launches it doesn't show the document, and it beach-balls forever. Is it corrupted somehow? I've used disk utility to repair permissions and that had no effect. How can I fix this? (It's annoying to use Word to open 20 word .txt files. It's on a machine using 10.3.9.