This is not the complete answer, and as nomaxim indicated, the email address you are seeing has been spoofed from an infected computer somewhere whose user has your address archived there.
You have basically 2 options, change your email address (again) or, use a spam filter.. I use Mail Washer Pro..but there are others.
http://www.firetrust.com/products/pro/
It takes a little getting used to and setup..but after awhile, you can have it auto delete almost all of the emails to you that come from unknown sources or non-friends.
With the use of Mail Washer, you have the ability to view all incoming mails while still on your servers system...mark them as blacklisted, bounce and delete from the server...then, download just the ones you want. As I said..it does take a little time to understand and configure, but IMO, beats changing email addresses every so often.