Hi all...
It looks like the Gtk-- team may have made a change that will give me fits, once again, with the 1.2.0 release.
The 0.9.5 release of Picmonger includes generation of aspect-scaled thumbnails that utilize a gdk_imlib wrapper that came with Gtk--. My preliminary understanding is that it has been removed from the Gtk-- 1.2.0 release. I've sent email to one of the Gtk-- team leaders about it, and am waiting for a reply.
Until I get this figured out, I would suggest one of the following workarounds:
1) Continue to use Gtk-- 1.1.8 until I can get this straightened out with them.
-or- (if you already have Gtk-- 1.2.0 installed)
2) Use an older version of PicMonger (0.9.4 should work) that doesn't maintain the aspect ratio in the thumbnails.
Keep an eye on this page for more news on this matter.
-- theoren