On version 1.6 everything was ok. Now every job using cvs fails.

After updating cvs plugin from version 1.6 to 2.0 I get:

FATAL: CVS authentication failure while running rlog command
java.lang.RuntimeException: CVS authentication failure while running rlog command
at hudson.scm.CVSSCM.getRemoteLogForModule(CVSSCM.java:529)
at hudson.scm.CVSSCM.calculateChangeLog(CVSSCM.java:409)
at hudson.scm.CVSSCM.checkout(CVSSCM.java:829)
at hudson.model.AbstractProject.checkout(AbstractProject.java:1195)
at hudson.model.AbstractBuild$AbstractRunner.checkout(AbstractBuild.java:579)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:468)
at hudson.model.Run.run(Run.java:1408)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:238)
Caused by: org.netbeans.lib.cvsclient.connection.AuthenticationException: Timeout, no response from server.
at org.netbeans.lib.cvsclient.Client.ensureConnection(Client.java:418)
at org.netbeans.lib.cvsclient.command.log.RlogCommand.execute(RlogCommand.java:357)
at org.netbeans.lib.cvsclient.Client.executeCommand(Client.java:710)
at hudson.scm.CVSSCM.getRemoteLogForModule(CVSSCM.java:521)
... 9 more