Everyone (that means you!) should read this: s2howto - printing trusted content.
Basically $e.text has been replaced by $e->print_text();, which requires some code modifications especially if you customize how entries are printed (say for smilies, etc.).
Forms are not working. If LJ has decided that they represent a "threat" then the LJ cleaner routine (which strips out javascript and tags like iform) is now also stripping out the form tag. Anyone know more?