Originally Posted By: tfabris
Perhaps that capacitor is building up a charge some of the time and it needs to get discharged once in a while by holding down the reset button.


I think that part is okay. It certainly doesn't have any bad effects here, at least.

But again, my board behaves like yours only when I forget to remove power from the FTDI chip while using the TX/RX pins from the I/O header. Or maybe when I get TX/RX reversed (oops!).