I just erased sig and saved and then added a new sig as below.
The sig applies to new posts, and some of the very recent posts, like this:
http://cellar.org/showthread.php?s=&threadid=1549
but not to the older posts, like this:
http://cellar.org/showthread.php?s=&threadid=1511
which isn't that old, because it was new to the
Quality Images thread. This meow image did have a sig originally, but iit has not had any sig since the time when I recently cleared, saved and set a new sig. I think that goes for all my older posts which are now without signatures. Who cares? Not me really ... I mean really, not me.
So, I'd say it's (c) unless you guys are seeing my sig in the linked meow thread above.
In which case, it's definitely (d).
I can live with it, either way.
I just thought the Toad lived on bugs, so I should let him know where to find them.
The bug appears to affect only a few of my posts ... not all the older posts. So it is (d) after all.