improved in the case that servers are restarted.  Before, if
  transactions were committed after the restart, clients that were up
  to date or nearly up to date at the time of the restart and then
  connected had to verify their caches.  Now, it is far more likely
  that a client that reconnects soon after a server restart won't have
  to verify its cache.

- Fixed a serious bug that could cause clients that disconnect from and
  reconnect to a server to get bad invalidation data if the server
  serves multiple storages with active writes.