Old posts appearing as comments??!!

Twice in two days an old posting has magically appeared in the moderation queue as a comment… not the entire post, mind you, just a clip of it.

The timestamp for the second one corresponds to the exact time I logged into the system.

1) I did not paste, clip, or even view the post before it appeared in the comment queue.

2) recent additions to my WordPress v2.0.5 include plugins for WordPress data backup (running successfully), GoogleSitemaps (no error messages), and GoogleAnalyticator (working fine as far as I can tell)

I have no problem deleting the comment and the original post is unaffected… have not yet tried approving the comment.

Any comments or suggestions appreciated.

Thx,
-p