Even after all objects using a material that uses an image are deleted (and the blend is saved/reloaded) the image datablock remains.
Mac OS 10.6 (Blender 2.53 beta, July 21)
Description
Description
Event Timeline
Comment Actions
To my knowledge, this is by design (or at least was in 2.4x). Read the tooltip on the X button to the right of the image's name in the selector. I believe it says to hold Shift while Left-Clicking to delete the image on save.
Comment Actions
Just save and reload an extra time, with indirect references this can happen. Not ideal but also not considered a bug at the moment.