Ah yes, wrong address, but when scanning for responding IP's I also could only see 4 nodes.
So, power cycled:
matthew-hart@linaro-gateway:~$ cxmanage ipinfo calxeda02-00-03
Getting IP addresses...
1 successes | 0 errors | 0 nodes left | .
IP info from calxeda02-00-03
Node 0: 192.168.2.75
Node 1: 192.168.2.78
Node 2: 192.168.2.81
Node 3: 192.168.2.84
Node 4: 192.168.2.87
Node 5: 192.168.2.90
Node 6: 192.168.2.93
Node 7: 192.168.2.96
Node 8: 192.168.2.99
Node 9: 192.168.2.102
Node 10: 192.168.2.105
Node 11: 192.168.2.108
Node 12: 192.168.2.111
Node 13: 192.168.2.114
Node 14: 192.168.2.117
Node 15: 192.168.2.120
Node 16: 192.168.2.123
Node 17: 192.168.2.126
Node 18: 192.168.2.129
Node 19: 192.168.2.132
Node 20: 192.168.2.135
Node 21: 192.168.2.138
Node 22: 192.168.2.141
Node 23: 192.168.2.144
Much better.
Thanks all,
Matt.