just guessing: maybe you would need to upgrade the firmware?
Do you still have problems? Or ... Was the installation of the Board Boot Image successful?
Did you updated the firmware in your board?
Which image are you using in your SD (eglibc or uclibc)? Are you having the same behavior without using an SD card?
Is the FTDI cable for 3.3V or 5V?
Is this happening since the first time or have you been able to use the Terminal Console before?