When submitting an edit, an answer, or a question, buttons and preview won't show in FireFox 3.5 on Stack Overflow.
On Meta, Super User, and Server Fault everything's fine, as it is on SO using IE8 and Chrome.
It started today, on Aug 26th 2009, at about 13:00Z
Mozilla/5.0 (Windows; U; Windows NT 5.1; ru; rv:126.96.36.199) Gecko/20090729 Firefox/3.5.2 (.NET CLR 3.5.30729)
The problem persists in safe mode too.
Does anybody else experience this or it is just me?