Hi,
in http://open.eucalyptus.com/wiki/EucalyptusGettingStarted_v2.0 there a small mistake.
When it is asked to run

. ~/.euca/euca2-*/eucarc

this cannot work since, according with the previous commands, there could not be "euca-2" dir. I will suggest to replace the previous command with:

. ~/.euca/eucarc

ok?

Cheers,
Massimo