I have (I think) submitted a bug report to this effect...
Select lists in any revealable area of the new WP2 admin interface are not working in Firefox 1.5 on Mac OSX 10.3.9.
This makes it impossible to select an author, page template, page parent, options for custom tags etc...
Normal inputs in and out of collapsible areas, and select lists not in collapsible areas of the interface work as expected.
This is sufficiently weird that it might just be me, but I have no clue as to why this should be happening, or of what might fix it, if indeed it is 'just me'.
Anyone else out there mac-based and seen this?? Or am I just going nuts?