I have frozen lots and lots of weed to find out that I won't do it anymore. When I stored good dried well groomed buds in the freezer, they fell apart when I took them out. This leaves them usable only for bongs or vaporizors.

I have frozen cookies, cakes, food stuff I made from high grade bud to find out over time it loses it's potency. My personal experience is to eat it right out of the oven, and man do you ever catch a buzz off that one. But each passing day, even while sitting in a dark air tight container, it loses the effects. So now I make only what I am to consume within a few days.