The recent OS X update 1.3.4 included Safari version 1.2.2, which has a buglet whose symptoms may be observed, if you’re reading this at ongoing rather than in an aggregator, just to your right, where the drop shadow on the little picture is borked. This technique is straight from Villareal as written up recently in A List Apart, so I suspect it’ll bite a few people here and there. Reproducible on the dev builds inside Apple, thus soon to be fixed I’m sure.