Adobe Flash Player checks for updates at startup. If updates are required the Adobe dialog pops up with a [Download] button.

Usually when I hit the [Download] button it downloads it straight away with a progress bar that zips across the dialog. I then get the option to install it. All good.

However, sometimes when I hit the [Download] button it takes me to the website: https://get3.adobe.com/flashplayer/update/plugin/
Which presents me with an [Update now] button (and to install McAfee!). What is this for? Why didn't it download and install in the "usual" way?

So, why are there apparently two different update methods for what appears to be the same thing? One is nice and swish and integrated into the updater, the other more long winded. In fact, I don't [Update now] when it takes me to the website, because I'm like "Hey, what's this?!"