I have a similiar story. I saw the v1.6.2 program update and other weekly updates, downloaded, v1.6.2 updater ran but I aborted it because I already had v1.6.2 installed and running, reran SpyBot and its updater and saw v1.6.2 as I expected, reran update, and no updates (2/11/2009 updates installed).
I did not have this problem (no v1.6.2 update since I already had it installed) on XP Pro. SP2 machine a few hours later when I needed to get the latest updates. I assume the v1.6.2 issue was fixed since I found it first.