We have done a roll out of flash player 220.127.116.11 (on windows 7) with automatic update, when will all our clients get the automatic update to 18.104.22.168 manually starting the update task does not work (yet)
Also does a major update (from 18 to 19) with a zero day security update overwrite the 30 days grays period?
There are two types of auto updates: Notification and Background. I'm not sure which one you're referring to. Notification Updates can take up to 7 days to update, and requires users to log off/on to see the notification prompt. Background Updates normally occur within 24 hours. Both of these updates were posted to the Adobe server yesterday (Tues 14-July) morning.
For your second question, please see An outline of Flash Runtime installation options