My site posts “ghost” comments on itself…

…if that makes any sense. I’ve been running WP 1.5 for (only) a happy month now with no problems, but a few days ago I began finding comments that were the result of my own recent posts or editing of posts. It appears to be random, though I know it isn’t.

My site is http://www.isoglossia.com, and I’ll log in to the dashboard and see that “www.isoglossia.com” has left a comment on some (apparently random) two-week old post, say. The “comment” is a (n apparently random) snippet of some more recent post or editing I’ve done.

To see the lastest of these comments, you can look here

Of course I can easily delete these ghost comments, but it’s a daily annoyance and, more importantly, I have a deep need to know WHY this is happening. Fascinating. But vexing. Any ideas? Bueller?