It seems that, as of this afternoon, new replies have links to flyertalk.com/forum/undefined magically inserted into them (as an image). Attempting to edit the post and delete them just seems to insert even more.

Also, every time I view a thread (without typing anything in the quick reply) it warns me when I try to navigate away from that thread that my changes will be discarded.

These seem to be new issues (within the last couple of hours)