Here's the issue:
I've a 31Kbyte JPG image. (I've googled for s/w to reduce the image size and I can do that no problem.)
When I use BlogDesk (BlogDesk) to write my blog post, include my image and then have BlogDesk upload to my WordPress 2.3 site, the image (when I right click and check properties) in the published blog post is now showing as 120Kbyte.
Nearly 4 times larger than before.
Can't register yet at BlogDesk forum because my email address is reported as banned - and I have never been to the forum before.