It's security update day in Drupal land.  Drupal 7.31 has a fairly serious SQL Injection vulnerability, which is fixed in Drupal 7.32. At the moment we're testing Drupal 7.32 (already did this site) and will be rolling it out on sites that are under maintenance for us as the day goes on.

This is in fact a REALLY serious problem and exploits are already in the wild.

We strongly advise that people do this upgrade.