I have a fresh install of 12.04 and was getting this error and none of the suggestions worked. When I looked at my sources.list of all the ones that were working precise is spelled with a lower case p. So I changed the Precise to precise and all was well. no more errors.
I have a fresh install of 12.04 and was getting this error and none of the suggestions worked. When I looked at my sources.list of all the ones that were working precise is spelled with a lower case p. So I changed the Precise to precise and all was well. no more errors.