The IPs from logs was yours?
Also if somebody have access to your email, he can delete confirmation emails. Try to ask email provider if any email was deleted
It sounds like they used a keylogger to me. Sat and gathered your log in information including your email. I suspect they probably intercepted the confirmation emails before you saw them then deleted them. Did BTC-E have a record that the emails were sent to that address? If so have you contacted your mail provider to see if they have any logs of another IP address accessing your email during those times?
If they do have a log I would be going straight to the police. The provider would have to release that information if it was part of a criminal investigation and the ISP would have to release who that IP address is registered to if it was part of a criminal investigation (depending on the laws surrounding that in the country you live in). Then hope that the hacker was foolish enough not to have used a proxy. Send the Feds / Fraud Cops / Interpol round to see them. In the UK for example you can claim for financial loss to the criminal injuries compensation scheme
http://www.justice.gov.uk/downloads/tribunals/criminal-injuries-compensation/FTT_CI_1_PracticeStatement_financial_loss1.pdfI hope this can be of help to you.