I think this is an MT issue not a browser issue.
What's happening is that the image links are broken.
You'll notice that every image that loads has a file extension. (Minitokyo_scan_xxxxx.jpg)
Every image that doesn't load, is missing the file extension (Minitokyo_scan_xxxxx).
Because the file extension is missing the browser won't load it. No browser will load it.
What's happening is that with Firefox it isn't even displaying the broken window with an X in it, so theres
nothing to click.
With other browsers you get a big broken window with an X in it, so you can right click save, and add the .jpg extension
to the end and click save.
I've found that when an Image is broken like this the only way to get at it in Firefox (without wasting your free
download qouta or credits) is to right click the tab and hit "duplicate tab" and try and right click the
broken window as fast as you can before it disappears. Takes me a good 2-8 trys like this to be able to get to the point
where I can save the image.