Mentioned in [12109] on Meta SVN:
Photo Directory: On author archives, change link for contributor to point to their wp.org profile.

Created ticket #6456 on Meta Trac:
10mb max upload size validation or a note about it on Submit page

Created ticket #6430 on Meta Trac:
Receiving HTTP Error 500 upon submitting an image

Created ticket #6408 on Meta Trac:
Adding a link to WP profile page on Author page