Bug report : Important crash of EoG

Hello !
First of all, thanks for this great software :)
BUT, I found a pretty big bug that caused my whole graphical session and
every other opened program to crash.

*I didn't use the bug tracker, because I don't know if I can upload images,
I don't have an account and there wasn't a lot of EoG bug reports. *

Here is what happend :

*wallpaper-87028.jpg *, the file (in this e-mail) is an image downloaded on
wallbase.cc.

I use ffmpegthumbnailers for the thumbs images (it's *really* incredibly
fast and compatible and should be Ubuntu's default b.t.w, seriously, why
not ?) and the thumb was perfectly generated.
I opened it with Eye of Gnome and displayed an error : (sorry, it's a bit
in french)

> *Erreur d'interprétation du fichier d'image JPEG (Not a JPEG file: starts
> with 0x89 0x50)*

I looked in the file proprieties :
  --> under the General tab : Type : image/jpeg
  --> under the Image tab : Type : png
I changed the extension from .jpg to .png
I opened the image again.
It almost immediatly shut the graphical session, very briefly showed some
text console message and took me back to Lightdm.
When I logged back in, all my programs were closed.
I tried once more, and this time I had to wait a few seconds more to make
it crash again. (I could see the image this time, it seems to lack a few
pixel somewhere)

if I open the image in firefox, there are no problems.

So I know this is most certainly a corrupted file, but I have like 2%
percent of my wallpapers that seem to be corrupted and it's a lot !
I think that such a huge bug caused by a simple file extension change
should not happen.
And there is the strange thing with the file type showing in jpg and png...
?


My config :
Ubuntu 12.04 LTS with Gnome Shell on a Dell Inspiron 15R Special Edition.
3rd generation Intel® Core™ i7
2Go AMD Radeon HD 7730M   (I'm using the latest amd proprietary drivers)
SDRAM DDR3 8 Go à 1600 MHz


Sorry for my poor english skills.
Thanks a lot !

Nathan

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