Existing users, 
There is still not full compatibility between Mac OSX and Windows versions of Powerpoint files.
Using for example a Powerpoint 2007 file created by a PC user, importanting on a Mac running Powerpoint 2008 (rel 12) I can tell you that many fonts in the Mac version are very badly displayed!
Microsoft Office 2004
Entourage, PowerPoint, Excel, Word suite.
Version: 11.5.6
Compatibility problems (Mac vs. PC)
Feedback Type: Troubleshooting Report
Contributed by: puffo25 Monday, February 11 2008 @ 12:00 AM PST
Product Platform:
Used Product For: 1-6 months
Recommend Product: NO
System Info:Tested on Leopard 10.5.1
Comments
Compatibility problems (Mac vs. PC) - pendragon
After checking with the M$ MBU and being assured that Office 2004 and Office 2008 can live together in harmony on the same volume, I gave it go.And right they were (and they can both be opened at the same time).
Yes, I too have PPT font/pagination issues (even Times New Roman) when 2004 PPT files are opened in 2008, but as I can still show (or burn) them from 2004 (with no issues), well, at least I have a workaround.
Reinstalling 2004 with all the updaters is a pain, and may take 30-45 minutes, but it may be easier than redoing all the old 2004 PPT files.
HTH
Wednesday, February 13 2008 @ 12:00 AM PST
Compatibility problems (Mac vs. PC) - drtimothyjames
I'm having the same problem. I teach, and my lectures are in PowerPoint slides that took me a long time to create. It gets embarrassing to suddenly see my slides look shoddy. Even worse, in many instances, I'm using a Times New Roman font. How can PowerPoint possibly screw that up? But it does.Reply to This
Wednesday, February 13 2008 @ 12:00 AM PST