How long can frozen foods be NOT frozen and still edible?

If you mean that (for instance) your freezer has broken and you want to know how long frozen food can be kept without power to the freezer. Then that really depends on much frozen food have in your freezer, how big it is, if you keep the lid shut etc....it would be unsafe and unwise to advise you on exact times for this - but rule of thumb the more items you have the longer the core temperature will remain low enough to keep your food safe (they insulate each other)!

Check out this to see advise if your freezer breaks:

http://www.thenewiceage.com/the-cold-facts/be-kind-your-freezer

However once it is defrosted you need to treat the items as if they are fresh.

Seafood and meat should be kept refrigerated and only kept for 2 days absolute max. Vegetables and herbs may last a little longer, but all products should ideally be used straight away to get the freshest taste and to ensure safety.

Heres some more specific guidelines on defrosting times:

http://www.thenewiceage.com/the-cold-facts/storing-defrosting-and-cooking-frozen-foods-safely