Script Summary: Click one button and sit back as ALL your Facebook wall activity is deleted. Just install this script, head over to your profile page and then click the tempting button. If you want to keep any of your witty posts or stunningly charming comments make sure to grab a download of your account from Facebook BEFORE you use this script.
This script is a rework of http://userscripts.org/scripts/show/106713 to reflect the UI update of Facebook. You must uninstall the original script before using this one. Otherwise it will not work. I have only tested on Firefox, using old profile page (not timeline). If you want to remove application posts, please install http://userscripts.org/scripts/show/119336.