Hi Mary,
I am looking to upgrade to moodle 2.4 and went to the plugins to see if there was an update for your theme https://moodle.org/plugins/view.php?plugin=theme_aardvark_postit but saw the notice about the temporary removal of the theme.(Dec 14th 2012)
Is it alright to upgrade moodle core with the existing aardvark post-it theme or does the temp removal mean problems were found that mean upgrading isn't recommended until you have the theme available again?