I tested it again, and it was essentially the same:
My modem, a Conexant 56K AClink, is V.92 . . . if that makes any difference from V.90 (which I doubt . . . there wouldn't be such a drastic increase in upload speed between the two I don't think). In any case, the upload speed seems to be anomalous for a dial up, which is why I tested it again. So, I guess I'll just have to live with it <grin>.
I HAVE noticed that when uploading images to photobucket it seems to be pretty fast (for a dial up, that is).