I didn't even know I was a registered member of Adobe's site until I received their password change email a couple of days ago. I don't know when I registered, it must have been at least three or four years ago while I was into Flex. Anyway, when I recieved the email I looked for information on when the breach occurred. According to krebsonsecurity.com, it happenned some time in the second half of September. This means I recieved an email prompting me to change my password about a month (!) after the breach occurred.
And that's not all. After I got the email, I wanted to close my account. Believe it or not, unless you're willing to call their US phone number (from 6 am - 8pm, Pacific time), you can't do it. Well, i'm not from the states, and I'm pretty angry that Adobe makes me jump through hoops just to close my account, especially in light of their recent security problems.