yeah, we noticed that today too and it's logged in our dev forum, so hopefully it'll get corrected soon. I've got a 3 hour drive to make right now, so it'll not be me tonight
I'm suspecting something screwy due to the DST we did early here in the US maybe.
Which timezone are you in? (I can't make it fail personally with my settings, so it's only a few timezones...)
Bok