hi..
I have installed UEC 11.04 on a machine( AMD athlon 64 bit processor), with CC and NC on a single machine.
VNET_MODE="STATIC"

root@ubuntu:~# euca-describe-availability-zones verbose
AVAILABILITYZONE cluster1 192.168.8.190
AVAILABILITYZONE |- vm types free / max cpu ram disk
AVAILABILITYZONE |- m1.small 0004 / 0004 1 192 2
AVAILABILITYZONE |- c1.medium 0004 / 0004 1 256 5
AVAILABILITYZONE |- m1.large 0002 / 0002 2 512 10
AVAILABILITYZONE |- m1.xlarge 0002 / 0002 2 1024 20
AVAILABILITYZONE |- c1.xlarge 0000 / 0000 4 2048 20

root@ubuntu:~# euca-describe-instances
RESERVATION r-4C4807DC admin default
INSTANCE i-467B08AD emi-5CB01709 192.168.8.201 172.19.1.2 pending 0 m1.small 2012-02-06T11:15:35.228Z cluster1eki-B9DE1C0F eri-98131B91

root@ubuntu:~# euca-describe-instances
RESERVATION r-4C4807DC admin default
INSTANCE i-467B08AD emi-5CB01709 192.168.8.201 172.19.1.2 terminated 0 m1.small 2012-02-06T11:15:35.228Z cluster1 eki-B9DE1C0F eri-98131B91

After some time the instance is terminated. It is never in the running state. Please help.

Thank-you