It must be the at the time, when statistics on anidb were updated.
Just wait few minutes until updating completes (check it on main anidb page) and try again.
Statistics have not been "done" or "updated" for a couple of hours now.
So maybe there is a little bug. I was quite shocked when I saw it and kinda happy that my mylist still had entries but fortunatly that is not the case and just the overall calculation of filesize and hints and so on weren't completed.
i have no idea what causes this.
i started the statistics script manually and everything updated just fine.
i guess we'll have to wait and see if it f00bars again.
So is this something that will repair itself on the next update? How often does the script update? If not, any ETA on a fix, I'd really like to be able to see my full stats