Automatic updates of Plesk?!

[albans]

Hi,

This the second time I'm suprised after a reboot that my server has some issue linked to Plesk:
- impossible to login into PSA admin interface, PleskExceptionERROR
- mailman configuration broken
- system date set to x.01.1905 (x is the day we're living)

Really problematic... Then, suddenly, next day, almost everything's working again fine (except the mailman config).

I can't understand what cause this. I've got no special entry in my logs... I did nothing on my side. It's just magical.

So, what I think is that Plesk is auto-updated via some way... But I can't even find a cron job that seem to do this. Mystery...

Did you guys have an idea?!

Thanks!