#286834 by quicksketch and dopry, so AHAH was in place... If you're using ahah make sure your wrapper id exists,
otherwise stuff can be a real mess. Also the jQuery form plugin does file submission in an iFrame and you can't
trust the post in the network console. I had to put the ahah wrapper in #prefix/#suffix and they have to be
overridden in the JS callback to prevent duplicate div wrappers appearing... I kind of wish ahah replaced it's
wrapper rather than  inserting inside the wrapper. ce la vie. but here is working JS upload and remove.