3.0rc2: Why does this resized GIF show in FF3.6.8 but not IE8?

This actually happens with both version 2.2.6 and 3.0rc2. I have an image here: http://gallery3.markheadrick.com/Home-Theater/Marantz_MR220-Insert

In Firefox the image displays fine and it seems to think it's of type "GIF image". But, when I view the page with IE8, it acts as if the image is non-existent, even if viewed directly. What's odd is that in the Home-Theater album, the thumbnail displays fine in both browsers. You'd think if the header was borked causing IE to not display it then the thumbnail should suffer the same problem.

If upload it as a JPG then both see it fine.

The webserver does have GIF defined as mime type: image/gif

Looks like the system is using: ImageMagick version 6.0.7

Ok, I switched it over to GD (2.0.34 compatible) and made this image:
http://gallery3.markheadrick.com/Home-Theater/Marantz_MR220-Insert-666890018

This will show in both FF and IE8. Also notice quite a difference in the sharpness of the image.

Now this is interesting, the Image Dimensions for the problem image in FF are: 443px × 640px (scaled to 442px × 640px) but in the other image: 443px × 640px and not scaled.

The GIF that displays in both is 138.18KB and the one that doesn't is 113.94KB.

So.. looks like the problem is either with ImageMagick or the code's interaction with it.
Hmmm.. just never noticed this before as I rarely post GIF images. Thoughts?

Thanks,
Mark H.

Using Gallery 2.2.6 - gallery.markheadrick.com

Yeah.. that's what I'm thinking. I'll see if my webhost can install a newer version (not going to hold breath, but doesn't hurt to try). At least I can use GD for dealing with GIF images for now or just permanently switch for everything.

Thanks,
Mark H.

Using Gallery 2.2.6 - gallery.markheadrick.com