How can I permanently dismiss Updates Available notifications?
I have just disabled checking for updates automatically from System Preferences:



I install updates manually from App Store or with sudo softwareupdate -ia.



I tried adding this command to the root's crontab (and not restarting after updates):

0 14 * * * /usr/sbin/softwareupdate -ia


I didn't have any issues at first, but after the 10.8.3 update, Safari started crashing on launch until I restarted. After that I changed -ia to -da so the command just downloads updates. softwareupdate does not include updates for App Store applications though.