No. Never.
What happened was: I've bought the CS5 in 2010 (I think this was the year).
So, Adobe made a contact with me, offering the CS6 free, and sent me a pack with the instalation's cd.
I did the instalation and I've started using it. And I've used it until now, with no problems.
When I tryed to edit an image with the liquefy filter, I have no results.
So, I have looked for responses in internet and most of the posts I've seen about, told me to reinstall the CS6, because maybe I could have the trouble solved with this action.
So, my troubles started!!
I can't use my serial number, because Adobe says this serial is revoked.
The only previous time I have seen a message about a serial number being revoked was as I asked earlier, about an Education version that came with the tuition, and it turned out that the University had purchased a time limited site license to give each student their own copy of the software... and every student had their number expire after 3 years
So, you are going to have to contact Adobe during chat hours
Chat/Phone: Mon - Fri 5am - 7pm (US Pacific Time) <=== NOTE DAYS AND TIME
Be sure to remain signed in with your Adobe ID before accessing the link below
Serial number and activation support (non-CC)
http://helpx.adobe.com/x-productkb/global/service1.html