I and another people have the same problem in Windows.
http://support.mozilla.com/tiki-view_forum_thread.php?locale=en-US&forumId=1&comments_threshold=0&comments_parentId=565636&comments_offset=0&comments_per_page=20&thread_style=commentStyle_plain
Adobe-flashplugin may be the problem.
I and another people have the same problem in Windows.
http:// support. mozilla. com/tiki- view_forum_ thread. php?locale= en-US&forumId= 1&comments_ threshold= 0&comments_ parentId= 565636& comments_ offset= 0&comments_ per_page= 20&thread_ style=commentSt yle_plain
Adobe-flashplugin may be the problem.