[dspace@localhost dspace]$ mvn -U package
[INFO] Scanning for projects...
[INFO] Reactor build order: 
[INFO]   DSpace Addon Modules
[INFO]   DSpace XML-UI (Manakin) :: Web Application
[INFO]   DSpace LNI :: Web Application
[INFO]   DSpace OAI :: Web Application
[INFO]   DSpace JSP-UI :: Web Application
[INFO]   DSpace SWORD :: Web Application
[INFO]   DSpace Assembly and Configuration
[INFO] ------------------------------------------------------------------------
[INFO] Building DSpace Addon Modules
[INFO]    task-segment: [package]
[INFO] ------------------------------------------------------------------------
[INFO] artifact org.apache.maven.plugins:maven-site-plugin: checking for updates from central
[WARNING] repository metadata for: 'artifact org.apache.maven.plugins:maven-site-plugin' could not be retrieved from repository: central due to an error: Error transferring file
[INFO] Repository 'central' will be blacklisted
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] The plugin 'org.apache.maven.plugins:maven-site-plugin' does not exist or no valid version could be found
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3 minutes 11 seconds
[INFO] Finished at: Tue Nov 04 12:31:57 IST 2008
[INFO] Final Memory: 1M/3M
[INFO] ------------------------------------------------------------------------