Google announced they were working on something in IE8 and no referrers passed for a couple weeks. Now IE8 back and passing almost all search term data (only 0.2% search terms unavailable, 96% unavailable 3 weeks ago).
Others seeing the same? Was Google working on a fix in SSL search but still pass search term using IE8 as test ground? Wishful thinking and just a miss that they aren't stripping the term?