Recent discussions related to concurrency have called my attention to http://jira.codehaus.org/browse/MNG-2802, and the linked article http://docs.codehaus.org/display/MAVEN/Local+repository+separation within that issue.
The interesting thing about this issue is that it really does not say *what* the exact problem is ? Could someone amend this issue with more information ? We are experiencing intermittent "corruption" of RELEASE artifacts in our local repository (sporadic classnotfound exceptions in our build) and we are really wondering what the cause of this issue is. This is on a highly concurrent 2 cpu/ 8 core build box.