Comment 5 for bug 452556

I have ran a capture of the traffic while the error is occuring:

Request:
CGET /services/Eucalyptus/?AWSAccessKeyId=***************************&Action=AuthorizeSecurityGroupIngress&CidrIp=0.0.0.0%2F0&FromPort=22&GroupName=default&IpProtocol=tcp&SignatureMethod=HmacSHA256&SignatureVersion=2&Timestamp=2009-10-16T16%3A42%3A34&ToPort=22&Version=2009-04-04&Signature=*****************%3D HTTP/1.1
Host: 192.168.0.65:8773
Accept-Encoding: identity
User-Agent: Boto/1.8d (linux2)

Reply:
HTTP/1.1 400 Bad Request
Content-Length: 381
Content-Type: application/xml; charset=UTF-8

<?xml version="1.0"?><Response><Errors><Error><Code>Groups</Code><Message>Error locating information for
<com.eucalyptus.entities.NetworkRulesGroup@e5d14fd3 uniqueName=admindefault description=null networkRules=[] userName=admin displayName=default id=null version=0 lastUpdate=null></Message></Error></Errors><RequestID>29083f78-9759-46ad-8205-0f867c2b21b9</RequestID></Response>

Hope this helps. I've replaced signature elements by *.