Yes, that is what I initially tried:
<img src="http://www.mysite.com/wp-images/worldmap.jpg"/>
I noticed that the paragraphs all got meshed together (from that WP release a few days ago?), even though they still showed correctly in the page content field of the page edit.
So, I copied what was in the page and pasted it to a newly created one. The newly created one displays everything as it should. Weird. At this point, I was thinking it might have been a firefox cache thing. So, I cleared the cache and tried the original page again. Same problem.
I'd have you look at it from your end, to see if you saw what I was seeing (as a test), but I got so fed up with it that I deleted the original page and used the newly created one instead. All is well once again.
Thank you for your time.