I had a feeling this would happen...it's due to the new option at Einstein@Home where users have to opt-in to have their data exported for the 3rd party stats, they have just enabled it by the looks of it and I'm showing the #users in the xml has dropped from ~469,000 to just 2619!!!!
Code:
MariaDB [dcfree]> select active_this_run,count(*) from boinc_user where proj = 'eah' group by active_this_run;
+-----------------+----------+
| active_this_run | count(*) |
+-----------------+----------+
| 7269 | 1 |
| 7270 | 466126 |
| 7272 | 2619 |
+-----------------+----------+
3 rows in set (1 min 11.18 sec)
Luckily I've deferred the automatic deletion of users which we are supposed to do, which is why the projranks and such are messed up but this is a total mess....