I usually have to punch it a few times-just channel your inner gaming button mashing skills.
But really, I click edit, read another thread for a few, then come back and click edit about three, four, five more times and eventually I'll get to edit. Same sort of clicking is usually needed for saving the post.
and don't think there's a timer, after posting something with a pic, I can edit within 30seconds to fix the image if it's broken
Oh, and those without gaming talent are the best for button mashing-remember playing Mortal Combat with my buddies brother in law who has down syndrome, dude kicked both our butt's and then some.