Sites such as Youtube allow you to allow plug-ins from the address bar (see second screenshot) but not Comodo TV (see first screenshot) for some reason.
EDIT: XP Pro SP3 (32-bit), limited and administrator accounts. Dragon 188.8.131.52 (beta) and 184.108.40.206 (stable). No plugins/themes.
EDIT2: Btw, same problem with Chomium 5.0.375.38 (46659) Ubuntu.
[attachment deleted by admin]