Until May 2015 everything was working fine, but today I get the following error

Building in workspace /var/lib/jenkins/jobs/My_Job/workspace
cvs checkout -P -D 26 Aug 2015 14:45:46 -0400 -d workspace my_job
ERROR: CVS Authentication failed: Timeout, no response from server.
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.checkout.CheckoutCommand.execute(CheckoutCommand.java:299)
at org.netbeans.lib.cvsclient.Client.executeCommand(Client.java:710)
at hudson.scm.AbstractCvs$1.invoke(AbstractCvs.java:265)
at hudson.scm.AbstractCvs$1.invoke(AbstractCvs.java:245)
at hudson.FilePath.act(FilePath.java:920)
at hudson.FilePath.act(FilePath.java:893)
at hudson.scm.AbstractCvs.perform(AbstractCvs.java:245)
at hudson.scm.AbstractCvs.checkout(AbstractCvs.java:211)
at hudson.scm.CVSSCM.checkout(CVSSCM.java:346)
at hudson.model.AbstractProject.checkout(AbstractProject.java:1251)
at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:604)
at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:86)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:513)
at hudson.model.Run.execute(Run.java:1704)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:231)
ERROR: Cvs task failed
[WARNINGS] Parsing warnings in files 'warnings.xml' with parser GNU C Compiler 4 (gcc)
[WARNINGS] Finding all files that match the pattern warnings.xml
Finished: FAILURE

Jenkins job configuration for CVS connection is

CVSROOT :pserver:user:password@host:/cvs
Location: Head
Remote name: my_job

I can checkout using Eclipse IDE, using the same connection, but Jenkins is failling