I checked a lot of sites on the web and all agree that it can be frozen but will separate on thawing and, even if stirred, won't look the same. U expect you could cook with it, but not use it 'as is' after freezing. It probably should not be frozen more than once. However, some sauces made with sour cream can be frozen.

From a U Georgia site:

Cheese keeps best in the refrigerator. If necessary, hard or semi-hard cheese can be frozen if cut in 1-1/2- to 1-pound sizes and packaged in moisture or vapor resistant material. This cheese may become crumbly and mealy when frozen, but will retain its flavor.

Cream cheese, cottage cheese and ricotta cheese do not freeze well. However, if combined with heavy cream, cream cheese can be frozen for later use in dips or as icing on frozen sandwich loaves.

Recommended freezer shelf life:
* Hard cheese (such as cheddar and Swiss), 6 months
* Soft cheese (such as Brie), 6 months