19:17EDT/23:17 UTC - We're currently experiencing a major outage in our Los Angeles data center. A large proportion of sites will see problems with the share counters timing out. This will be indicated by a question mark rather than the count. Facebook Like, Tweet, and Google+ counters will not be affected. We're currently working on the issue and will have it resolved as soon as possible.
20:16EDT/0:16UTC - Everything appears to be back to normal. Please report any unusual share counter performance to firstname.lastname@example.org