Comment 2 for bug 344228

I think this is a good decision. There should be somewhere in home where all previous wallpapers are stored, so that you can revert to previously used (now deleted) images.

There should be, however a limit on this. Maybe there should be a size limit on what can be stored (which can be set by the user on the Background tab from the desktop menu). If this limit is reached, the oldest/least used wallpapers are deleted?

Most machines these days aren't short of a few billion bytes, and those that are would be able to set a really small size limit (a rough estimate set at installation time).