Some more notes from another couple days with Leopard:

I've been experiencing brief halts on things like printing and email every once in a while. It's like the system is thinking, but nothing is happening. It might be resolved with a restart, but compared to 10.4, which was rock solid all of the time even when running for months straight, it's annoying.

Also, I found that 10.4 machines don't have the same printing options when using shared printers that are hosted on a 10.5 machine.

Filemaker scripts that save previous print settings do not remember the print settings correctly.

Software compatibility continues to be really good - with only minor application issues here and there. VPN Tracker is the biggest one for us.

Workgroup Manager (the application for administering users and groups on a 10.4 server) isn't very stable - but then again, it never really was.

Bottom line: still just as we predicted - not quite ready for everyone's business critical machines, but pretty darn close.