It might be just a minor problem, but Mail stopped making sounds. No new mail sound, no reassuring jetplane sound when a mail is sent, no blip when there's nothing going on. I've checked the preferences, and they should still be turned on. Also, I've got the impression something hapened to either my keychain or my cookies in Safari, since I had to login to a bunch of forums and other sites that I can normally just check. Firefox doesn't seem to have this problem, but I prefer Safari as my primary internet browser.