Wow, another Windows 2008 post. :)
Was having to FTP some stuff today, and I use FileZilla, which was working fine. I wanted to do a Beyond Compare with a folder and the FTP and it was erroring out. WTF. So I try Windows FTP (Start->Run: cmd, ftp)
I could connect, but couldn’t list anything, it would just hang. The fix: turn off Windows built in firewall.