I noticed something else a little unusual last night;
Previously, when I clicked on an attachemnt in a thread, when I clicked my "back" button to return to the thread, it would automatically default me to the very last post of the thread even if the post I was just reading (the one with the attachment) was several pages before the end of the thread. (hope that made sense, hard to explain that clearly)
Now it's not doing that, it's returning me back to the post with the attachment.
That part of this mystery glitch I don't mind so much.
Eric