TX LED problem on Arduino NG

Before a few days I bought 2 Arduino NG USB Boards. The boards work properly, but on one of them TX LED lights uninterruptedly. This strange effect comes on the first start of the board. I don’t have problems with serial connection with PC, everything is OK, I can upload program etc.
I look at the schematic, maybe the problem is in U4 FT232RL, pin 22 and my board has defect?

On another board that I have TX and RX LEDs blink only when there are Arduino<->PC transfer.

Thanks in advance.