It appears that statistics.datetime is created with SQL NOW(); Although this is perfect in most case, when using binarylogs to synchronize between two database server instance (like in master-slave configuration), this will lead to erratic data being imported into the slave server if a delay is encountered between creation on the master and import on the slave.
Solved by changes introduced by bz24151 *** This bug has been marked as a duplicate of bug 24151 ***