Regardling Flickr specifically, is this the arrow you're missing, the second one from left? Are you in your own photostream, and have a single image up?
Not all HTML code works on UHH. The UHH parser has a small set of codes it will accommodate.
This is all that will work here (10):
>> text - bold >> text - italic >> text - underlined >> text - strikethrough >> text - change color >> address - link >> title - link with a title >> address - hotlinked pic >>
Are you replying to me? Please use the button labeled quote reply when responding to a specific person. Can you do a screenprint of what you do see, and attach to this thread, please?