i had the sam problem: I threw away both ‘uploads’ and ‘myimages’ folders and created a new ‘myimages’ folder(with my ftp-application) and chmod’ed it to 777. Then set wp-contents temporarily to 777, turned of date-organizing in WordPress and uploaded my first image! It worked! Then I changed WP-content back to 755 and it still works. So I’m confident this is a wordpress bug. Unfortunately i’m not much of a programmer…and the automatic date-organizer still doesn’t work…
