One problem gets fixed, another gets caused. Yahoo! was fixing the fact that my trash folder wasn't displaying all messages, and in doing so, reset the folder views to descending by date, not ascending by date. This caused no little consternation, as I hadn't reset it, and couldn't get it to stay set by clicking the little bloody sort-arrow.
After I figured out that it was some klutz having mucked with my account, I was able to re-reset it myself, but grr.
What was this, turning the vase just a little so I'd be sure to know they were inside?