Hi cyclegadget,
The timer libs came from the playground: Arduino Playground - HomePage
I know about the serial port speed but I have an arduino data logger spitting out it's reading true the serial port to my FriendlyARM dashboard.
The arm reads the serial port with a bash script (simple cat) and writes the data on the screen, when using 115200 I ran into problems on that so I stepped back in speed and somehow kept that for other projects...
If all works out well I remove the serial stuff completely...