Comments on Safari not working

I think this is my third time asking this question. My website is: http://www.baldingangrily.com. Users on Safari cannot comment on my posts. Users on Internet Explorer cannot see the “Submit” button underneath the comment field. I just upgraded to 2.1 using Dreamhost’s one-click installer. I use the Unsleepable 2.0 theme. I have the Askimet and WP-Cache plug-ins enabled.

Please help.