Build Zimbra 5.0 on Ubuntu 8.04

[angiangtoday]

I have a error:

init-wiki:
     [echo] Initializing wiki@localhost
     [java] ERROR: zclient.IO_ERROR (invoke Connection refused, server: localhost) (cause: java.net.ConnectException Connection refused)

BUILD FAILED
/media/DATA/Documents/Zimbra/zimbrasource/ZimbraServer/build.xml:659: The following error occurred while executing this line:
/media/DATA/Documents/Zimbra/zimbrasource/ZimbraServer/build.xml:723: Java returned: 2

Please help me to fix it!

[dalmate]

You install from binary package or build from source code?