You can check your Moodle version by going to http://www.your.moodle.site/admin/index.php
That should display the version in the bottom half of the page, something similar to
Moodle 1.9.11+ (Build: 20110223)
Copyright © 1999 onwards, Martin Dougiamas
and many other contributors.
GNU Public License
On the other hand, as far as I remember, admins don't get notifications when users try to recover their forgotten passwords. The users themselves got an email with instructions to reset it.