Shaddows - 11:54 am on Jun 25, 2010 (gmt 0)
If can't see interim updates, your data does not incorporate a wide enough sample. Just read the boards- a lot of people were affected by one event, but not another. Clearly you have only been caught by the MayDay event, but I can assure you several other datapushes have happened.
Caffeine or no, the algo has shifted several times. Or at least, meta-algo events have been incorporated. Things like adding in penalty alorithms/filters, or changing the auto-correct, auto-suggest or other "evironmental" factors.