[CentOS] Unexpected FTP Activity

Fri Oct 10 14:06:02 UTC 2008
Mike -- EMAIL IGNORED <m_d_berger_1900 at yahoo.com>

Since I put my new Centos box on the net, it frequently
tr1es to make ftp contact with IP address 64.90.181.77 .

Why is this, and does anyone recognize this IP address?
Is it spyware?

Mike.