Please describe the problem:
I cannot save images in JPEG format.

Steps to reproduce:
1. Open some image
2. File -> Save As...
3. Try to save as jpeg. The options (optimized, progressive) don't matter.

Actual results:
A 0 byte file gets written. In the terminal from which I started gthumb,
I get the following output:

(gthumb:18670): GdkPixbuf-WARNING **: Bad option name 'smooth' passed to JPEG saver

(gthumb:18670): GdkPixbuf-CRITICAL **: gdk_pixbuf_savev: assertion `error ==
NULL || *error != NULL' failed

** (gthumb:18670): CRITICAL **: _gtk_error_dialog_from_gerror_run: assertion
`*gerror != NULL' failed


Expected results:
Image gets created.

Does this happen every time?
Happens every time. Happens since quite some time now.

Other information:
I'm using 2.6.9 on a Gentoo Linux system.

The following libraries and (Gentoo) versions are linked into /usr/bin/gthumb
(according to "ldd /usr/bin/gthumb"):

gdk-pixbuf-0.22.0-r5, compiled with mmx support

alsa-lib-1.0.11_rc5
atk-1.10.3
audiofile-0.2.6-r2
cairo-1.0.4
esound-0.2.36-r1
expat-2.0.0
fontconfig-2.3.2-r1
freetype-2.1.10
gconf-2.12.1-r1
glib-2.8.6
glibc-2.3.6-r3
gnome-keyring-0.4.6
gnome-vfs-2.12.2
gthumb-2.6.9
gtk+-2.8.13
jpeg-6b-r6
libart_lgpl-2.3.17
libbonobo-2.10.1
libbonoboui-2.10.1-r1
libexif-0.6.13-r1
libglade-2.5.1
libgnome-2.12.0.1
libgnomecanvas-2.12.0
libgnomeprint-2.12.1
libgnomeprintui-2.12.1
libgnomeui-2.12.1
libICE-1.0.0
libpng-1.2.8-r1
libSM-1.0.0
libX11-1.0.0-r2
libXau-1.0.0
libXcursor-1.1.5.2-r1
libXdmcp-1.0.0
libXext-1.0.0-r1
libXfixes-3.0.1.2
libXft-2.1.8.2
libXi-1.0.0-r1
libxml2-2.6.23-r1
libXrandr-1.1.0.2-r1
libXrender-0.9.0.2
openssl-0.9.7i
orbit-2.12.5
pango-1.10.4
popt-1.7-r1
tiff-3.7.4
zlib-1.2.3