nautilus don't show thumbnails for jpg images

I have noticed that: nautilus shows the thumbnail if the image has the .jpeg extension instead .jpg

Sorry for my bad english.

Thanks for your bug, but we could use a little more information to solving this one. Can you give us the results of the following command on any one of the images:

gvfs-info ~/path/to/image.jpg

In particular, we're looking for the standard::content-type and thumbnail::* keys.

Here is the result of the comand:

miguel@miguel-laptop:~/Imágenes$ gvfs-info avatar.jpg
display name: avatar.jpg
edit name: avatar.jpg
name: avatar.jpg
type: regular
size: 35955
attributes:
  standard::name: avatar.jpg
  standard::type: 1
  standard::size: 35955
  standard::display-name: avatar.jpg
  standard::edit-name: avatar.jpg
  standard::copy-name: avatar.jpg
  standard::content-type: application/x-extension-jpg
  standard::icon: GThemedIcon:0x805f550
  standard::fast-content-type: application/x-extension-jpg
  unix::device: 2051
  unix::inode: 7635488
  unix::mode: 33188
  unix::nlink: 1
  unix::uid: 1000
  unix::gid: 1000
  unix::rdev: 0
  unix::block-size: 4096
  unix::blocks: 72
  time::modified: 1185349429
  time::modified-usec: 0
  time::access: 1204577284
  time::access-usec: 0
  time::changed: 1187352677
  time::changed-usec: 0
  etag::value: 1185349429:0
  id::file: l2051:7635488
  id::filesystem: l2051
  owner::user: miguel
  owner::user-real: Miguel Angel Marcos
  owner::group: miguel
  access::can-read: TRUE
  access::can-write: TRUE
  access::can-execute: FALSE
  access::can-rename: TRUE
  access::can-delete: TRUE
  access::can-trash: TRUE

there is no thumbnail::* key. Is that the problem?

could you attach an example to the bug?

An example? What kind of example? I don't know if it's really a bug or a system config issue,but nautilus don't show any thumbnail if the image has the .jpg extension only a white icon (like i posted in my first entry to this bug). Nothing more. If the extension is .gif, .png or .jpeg nautilus work fine and show the thumbnail for the image. I did a clean install of Hardy over my Gutsy system (formatting root partition but keeping home partition), deleting .nautilus and .thumbnails hidden folders and the problem continues.

He meant to attach a sample image to the bug, one that was causing the problem. But I think it may be something simpler. You should check ~/.local/share/mime/ and make sure you don't have an entries overriding JPG's MIME entry. The likely culprit is in ~/.local/share/mime/globs, a line something like the following might have crept in:
application/x-extension-jpg:*.jpg
If so, comment it out by adding "# " in front of it (note the space).
# application/x-extension-jpg:*.jpg

Nautilus's thumbnailer is looking for images with specific content types (mime-types), and application/x-extension-jpg isn't on the list (as it should be reporting image/jpeg for a jpg image). Certain applications (F-Spot in particular) have been known to override this entry in the past for whatever reasons.

Yes, it works!!
Thanks A. Walton for your workaround and interest and sorry for wasting your time. Thanks. Please close this bug entry and sorry again.

Oh, and thanks to Sebastien Bacher too, of course.

closing since that's not a bug and works correctly now