Gmail delivery problem

I have been using gmail since they launched the service. I like it very much and this is my primary email system. I have few gmail e-mail addresses. One of this is munka[dot]munka[at]gmail[dot]com. I have been using this email address for 4 years. Somebody has the munkamunka[at]gmail[dot]com address. In a last few weeks I recived mails from peoples who wanted to apply for a job. But lask week I got an email from a girl with naked photos about the girl. :)