Joomla 1.5.2, RSGallery2 1.14.0 Alpha - SVN 378.

Has anyone experienced the below message when trying to post a comment?

Message

• Comment could not be added!

Several people, that are logged in, have gotten this message from time to time. I tested it again today and noticed while logged in that I was able to post a comment, then on another picture tried to post a comment and got the above warning message. A few moments later on the same picture I tried again and WAS ABLE to post a picture.

What causes this message to come up? Looking for a way to fix.

Thanks!!