Macintouch: LeopardThis is a bit surprising. I wonder what other OS X applications will break with 10.5.
....For anyone using AppleWorks, convert your files before you do the migration to Leopard. AppleWorks will not load in Leopard. Some files will open in iWork & Numbers, but others will even break the new programs. Large files seem to be the issue, and converting to Excel or Word formats before the upgrade would be a smart move..."
I'm not too surprised though, Apple has always had a somewhat cavalier attitude towards breaking applications. Too bad they don't match that with support for old file formats -- including their own dam$%ed file formats.
Which reminds me -- I wonder if it breaks Classic? Classic won't run on Intel of course, but I run it on my G5 iMac with OS X 10.4.10. There's still not much in the way of children's games or educational software for OS X  -- and I sometimes fire up MORE 3.1 or FullWrite Professional to open old files.
Realistically, I should wait until February until I update my G5, or until iPhone 2.0 makes me update. January, after 10.5.1 and updates to Retrospect client and a bunch of other apps I rely on, will be when I update the MacBook.
Overall I'm looking forward to 10.5.1 however. There are many things on the feature list I really want (fully supported screen sharing, remote control, iChat, Apple's new version of "Outlook" called Mail.app, the signed application model, the memory map randomization, built-in PDF manipulation, better scanning support, etc, etc.) This looks like an upgrade for power users, developers, and for the support of good things to come.
 Really, there's not much in the way of interesting educational software or children's games on Windows either. That market basically went to Nintendo. There's more support for older software on XP than OS X though.