I'm having frequent recurring problem with powerpoint on my macbook. I've googled for days, it seems, and can only find discussions about it crashing upon startup - and that's not my problem. Here's what I'm experiencing: - Typically it starts up fine, either by clicking the icon, or double-clicking a PPT file. - Occasionally it will open up a PPT file and won't be displaying any pages in the sidebar. It's like it ran out of memory or something. I can page through all the slides, and they are there. But they don't display in the sidebar. A complete restart of PPT fixes this. - FREQUENTLY it will randomly crash in the middle of working on a PPT file. I've not noticed any pattern on when it happens - seems to be at random. I do work on a lot of PPT files, and it seems to happen when I've been working on multiple different documents, even though I've closed some. - FREQUENTLY it will crash when I have existing PPT files open (maybe 2 or 3 will be open) and I'll double-click a new PPT file to open it. Powerpoint crashes. ANY CLUES? It's driving me nuts, especially since working on PPTs is such a big part of my job. Thanks in advance. FYI - I'm on a unibody MacBook Pro (bought it last year) with 750gig HD, have plenty of space. MSFT Office 11 has latest updates - yet this PPT crashing problem has persisted through the last several updates. I keep hoping one will fix it, but no such luck. No other crashing problems with Excel or Word, by the way.