When on Space Permission page (in edit mode), the 2 options 'Select All' and 'Deselect All' under the last column 'Actions' does not do anything.
This happens for section 'Individual Users' and 'Anonymous Access' only, and works fine for first section 'Groups'

I am using Chrome as browser for our JIRA and Confluence setup.

And do you guys give special prizes or bounties for bug reports? It should keep me enthusiastic for more of such findings and reports.

One more, as a friendly information:
On main JIRA page: http://jira.atlassian.com (Or https://jira.atlassian.com/secure/Dashboard.jspa), under the section 'Introduction' - the last link 'mailing list' takes user to a 404 page.