For some reason we were having problems where people could not add comments to some posts. It was random. Some would have 3 replies and some nine replies and then you could simply not reply any longer. It would load the reply box and then it would disappear. After disabling this plug it all worked again.
I don't know if it is a conflict with another plugin I am using or what.
Other plugins I am using include:
BuddyPress Activity Comment Notifier
BuddyPress Activity Plus
GEO my WP
rtMedia for WordPress, BuddyPress and bbPress
I would be grateful for any help.