Carlcox89:
i have both working fine on a arduino duemilanove
pins are:
...
and voila, you can use ethernet and nrf together.
I'd suggest you try the GettingStarted example from rF24 library and see if the printed details look good
then you can start to play with ethernet library too
Did you have to issue any special stop commands on the ethernet shield? Are you using Ethernet.h for the ethernet? Which library are you using for the nRF24L01? There's a couple of those floating around.
I'm also not sure if maybe it's the xively library that's giving me grief. I have ethernet and nRF24L01 working separately, just not together on the same device.