(Moderators..this forum have some kind of caching problem. Logged in but it was cached so i couldnt reply in here about 15mins~)
@etanr, I am glad you like FirmaSite theme. That problem is fixed and will release in new version. Meanwhile you can fix it if you want or just wait for next release. Details:
http://theme.firmasite.com/support/topic/comments-problem-in-activity/