After doing a clean install of the latest LMDE respin (linuxmint-201204-mate-cinnamon-64bit-rc) I noticed that the "sources.list" all point to the "incoming" repo. They should be pointing towards the "latest" repositories, yes?
"Humph. Choice, it is the quintessential Linux delusion, simultaneously the source of it's greatest strength, and it's greatest weakness." (All apologies to The Architect)