Arduino Mini cannot transmit through XBee Series 2

Hello,

I am trying to setup a network consisting of one coordinator (XBee Series 2 attached to a computer via a USB explorer) and several nodes (Arduino Mini with XBee Series 2 connected on a breakout board from Droids). And just for testing I also setup a node using Duemilanove with an XBee shield. All XBee’s have been setup with the ZNet API firmware (one coordinator, and severel router/end points). The software I uploaded to both the Mini and the Duemilanove are exactly the same. I have used the xbee-arduino library (http://code.google.com/p/xbee-arduino/).

On the host computer, I used one of the examples provided with the xbee-api (http://code.google.com/p/xbee-api/). The data sent from the Duemilanove reached the host, and was readable. But the data sent from the Mini was never to be seen.

Since the configuration of the XBee’s are exactly the same (except for some unique addresses), and the software loaded onto the Arduino’s are the same, I thought maybe there were some significant differences between the Mini and the Duemilanove. According to arduino.cc, the only difference is that the Mini has 2 more analogue inputs.

Does anyone have any experience using the Arduino Mini with XBee’s, and knows what might be the problem?