This seems to be the case in Lavasoft’s support forum. Now, while there are some people not satisfied with the products of my company as well, it is not solely Ad-Aware 2007 which is to blame as it seems:
This is a JOKE!! I HAVE WASTED 90 MINUTES SO FAR ON A SYSTEM THAT SUCKS!! UNDER ORDER # xyz ON 6-10-07 I PAID GOOD MONEY AND NEVER GOT AN E-MAIL WITH A SERIAL NUMBER EITHER! JUST LIKE YOU, THE SYSTEM SAID MY E-MAIL ADDRESS IS NOT RECOGNIZED. FUNNY THEY HAD NO PROBLEM TAKING MY MONEY!! HORRIBLE !!!!!!!!!!!!!
(Source)
The username says it all: “MAD AS HELL” 😆
The little fuckups in the ordering systems must have taught them a lesson by now – a lesson that every company has to learn one way or the other: Never release close to the weekend! The worst case scenarios will definitely hit you at the weekend then.
But who cares anyway, you ask? No clue! 
// Oliver
PS: Those who haven’t got a clue yet, it may not entirely be coincidence that lava is hot and this guy is mad as hell.