Is this update notification legit?

I keep getting a popup that looks like a legitimate Adobe posting advising that my Flash Player is outdated. I have refused to proceed and update, because the https: signature does not have "Adobe" in it, but rather "poojogaspadine.net" -- I've searched that address and it is not found. I've been hit with a Trojan horse in the past by doing an "update" that was not from a legitimate site. Does anyone get this message also, and should I update or not?