Now this could be an issue in our CVS servers, but I'm not aware of any problems.

Creating a new plan, to check out from CVS using the URL:

CVS Root: :pserver:anonymous@cvs.jaxen.codehaus.org:/cvs/jaxen/
Module: jaxen

Cannot connect to CVS root: Authentication failed. Response from server was: "error 0 /cv".

Now if I do this at the command line I get:

$ cvs -d :pserver:anonymous@cvs.jaxen.codehaus.org:/cvs/jaxen/ co jaxen
cvs checkout: Updating jaxen
U jaxen/.cvsignore
U jaxen/INSTALL
...

all good

I've tried this in two different Bamboo instances - same error.

There's nothing relevant in the log (i.e. nothing related to the error occurring - just some activity on another plan that's building)

A problem in Bamboo? or a problem in the Codehaus CVS servers?