login and password ignored in checkout operation

This is what I see in continuum.log:

2008-10-01 02:00:04,248 [pool-1-thread-1] INFO action#checkout-project - Checking out project: 'RNP', id: '6' to 'C:\apache\apache-continuum-1.3-SNAPSHOT\target\working-directory\6' with branch/tag .
2008-10-01 02:00:04,405 [pool-1-thread-1] INFO org.apache.continuum.scm.manager.Slf4jScmLogger - Executing: cmd.exe /X /C "svn --non-interactive checkout svn://server.com/RNP/trunk 6"
2008-10-01 02:00:04,405 [pool-1-thread-1] INFO org.apache.continuum.scm.manager.Slf4jScmLogger - Working directory: C:\apache\apache-continuum-1.3-SNAPSHOT\target\working-directory
2008-10-01 02:00:06,998 [pool-1-thread-1] WARN action#checkout-project - Error while checking out the code for project: 'RNP', id: '6' to 'C:\apache\apache-continuum-1.3-SNAPSHOT\target\working-directory\6' with branch/tag .
2008-10-01 02:00:06,998 [pool-1-thread-1] WARN action#checkout-project - Command output: svn: Authorization failed

Authorization failed because cmd.exe is executed with svn WITHOUT --user and --password options.

Why so?