2007.07.14 08:00 "[Tiff] [ANNOUNCE]: Libtiff 3.9.0beta released", by Andrey Kiselev

2007.07.26 23:39 "Re: [Tiff] possible ABI change in 3.9.0 beta?", by Jay Berkenbilt

Does anyone have an idea how many applications are using TIFFRGBAImage?

Back in 2004 when an accidental change to this structure was introduced sometime between 3.5.7 and 3.6.1, many debian packages broke as a result. I don't remember which ones they were, but there were several gnome packages. I seem to recall gthumb, eog, and whatever their desktop manager is all being effected.

In the collection of bugs from that time, I see mention of hylafax (though that may have been a different issue), gnome-panel, gqview, nautilus, gthumb, and xmffm4.