I have uploaded 2 planetarium-related photos to test the forum image upload feature. Instead of a traditional file selection dialog or an AJAX interface, it uses a Java applet, which seems a bit unusual and heavyweight.
The applet area has refresh problems with Firefox 2 under MacOS X. When scrolling the containing page, the applet area frequently disappears for a few moments. Also, the text field for image captions is a bit small and does not allow rich text formatting. A workaround is to post a comment to the image.
Interesting. There is another option for photos which is to have a Flickr.com widget. This is, of course, somewhat more complex if people don't have Flickr accounts. Maybe with the new Firefox 3.0 release today, it will solve some of these problems!