Update/upgrade strategy

[LuisN]

I'm taking an informal poll and would like your help.

1) How often do you update the OS on your Plesk server (ie, using "yum" or similar)?
(Weekly, monthly, quarterly, only when updating Plesk packages, never, ...)

2) How often do you update the Plesk packages on your server?
(Immediately after a new version is released, 1-2 months after a new version is released, only when something is broken on my server, never, ...)

Thanks in advance!