"Run this action now" leaves user in limbo

[TenLeftFingers]

I get the attached prompt on my desktop a few times a year. Usually for flashplugin-installer but possibly for ms fonts too.

I click 'Run this action now' as directed and I am prompted for my password. But, the conversation ends there and after waiting for some time I decided to click the only other button, 'Close'.

I have no idea if I am doing this correctly or not, but one of these scenarios should happen:

1) After choosing to run the action, the dialog should dismiss itself after issuing whatever commands it issues behind the scenes after requesting my password.

2) The text should explicitly tell the user "Click on 'Run this action now'", enter password and then click the "Close" button.