Turning off update notification.

[kryton]

Hi all.
I was on 5.1.018 and could not find a way to disable the flashing green update notification in the info bar. If i remember correctly it was in the system/software update section.
But now when choosing this it just downloads the latest update with no options inside to disable the software update check.

Ive since updated to 5.1.019 but still cannot find the option to disable checks.
Anybody know where this option is now?
Cheers.