Hello
The following is for OS X 10.6.8 but possibly it might be applicable to 10.9.5 as well.
Under 10.6.8 with an App Store update applied, intrusive notifications like the said one is reportedly generated by the following application:
/System/Library/PrivateFrameworks/CommerceKit.framework/Versions/A/Resources/Noticeboard.app
And this application is periodically invoked by the following launch agent:
/System/Library/LaunchAgents/com.apple.noticeboard.plist
Thus you might disable such unsolicited advertisements by disabling the launch agent by:
#!/bin/bash
sudo launchctl unload -w /System/Library/LaunchAgents/com.apple.noticeboard.plist
and reboot.
If you really wish, you may optionally delete the application after disabling the launch agent:
#!/bin/bash
sudo rm -fR /System/Library/PrivateFrameworks/CommerceKit.framework/Versions/A/Resources/Noticeboard.app
NOTES
- I myself have not tried this procedures because I have never applied App Store update and therefore not seen this sort of annoying advertisements under 10.6.8.
- Even if this works as intended, it might have unwanted consequences. So make sure you have backuped your system before modifying system like this.
- NO WARRANTIES OF ANY KIND. I posted this just in hope it might help you to get rid of the annoyance. And indeed if I were you, I'd investigate this noticeboard thing and try to get rid of it.
Good luck,
H
PS.
cf.
Turn off mavericks upgrade notification in Snow Leopard
https://discussions.apple.com/thread/6060490
Is there a way to block these pop-up windows pushing that I update the computer's MacOSX to Mavericks?
https://discussions.apple.com/thread/6059698