I have changed my e-mail address some time ago and still I get book-promotions on my old e-mail address. I read in this forum that the reason could be duplicate registrations, but I am pretty sure I have registred only once. I even tried the "lost password" option and got the following message:
Find Lost Registration Login Problem: We are unable to find a registration that matches that email address.
which proofs my point that I have only 1 registration.
How can I really change my e-mail address in my profile?
Each number system has exactly 10 different digits.
It appears there's probably a bug in our system somewhere. See here for another example. Please send us the full header from one of the e-mails you receive, and we will try to track down what is really happening. Thanks.