My b2evolution Version: 2.x

I'm trying to insert code like Flickr-badge or friendfeed (html) but nothing works. I have unchecked all the security options for admin, but no change.
Funny thing is, that the friendfeed worked in the beginning (without Tinymce installed) an now it's only displaying the code - so I have choosen the image version, which is only second best.
Any tricks to solve this?

Thank you in advance :D