Aperture 3.2.3
Apple has released Aperture 3.2.3, a small maintenance update to its professional photo organizer and editor. Like the recent update to iPhoto (see “iPhoto ’11 9.2.2,” 8 March 2012), this release enables you to delete individual photos from your iCloud Photo Stream. It also addresses unnamed “minor issues related to performance and stability.” ($79.99 new, free update, 635.54 MB, [release notes][*])
The minor issue related to performance seems to be an alert which popped up on my machine requesting that I delete a 3ivx QuickTime component which 'severely impacts performance'. It identifies it in the Finder and continues with the install after deletion.