hi all,
i have installed UEC and have formed a cloud using two systems.
One acting as node controller and the other one as cloud controller

I installed Ubuntu 10.04 server edition on both systems and as an instance have installed Ubuntu 9.04 from the package which eucalyptus do provide us on the admin interface.

I started the instance it is running fine but problem is that i cant login into instances.

COMMAND:
ssh -i ~/.euca/mykey.priv root@192.168.30.1
I was able to login once but on restarting the server after that i wasnt able to login again

now when i ssh it asks for
enter password for root@192.168.30.1:

Please help me out....