Further to Eliza's point about "sake", it's very common to hear "And days of Auld Lang Syne", which again I don't think is to be found in any version Burns would have seen. As far as I recall, the holograph copy in the Glenriddel MSS reads, "And Days of Lang Syne" at the end of the first verse, and "For Auld Lang Syne" at the end of each refrain. Maybe, given the likelihood that drink has been taken when this song is sung, it shouldn't be too widely stated that Burns also wrote, with reference to the line about taking a cup of kindness, "some sing, 'kiss'". Mind you, never mind Tony Blair, I'd like to look and laugh at the auld Queen getting herself claught by the rump by some Australian Prime Minister....