Jenkins has stopped launching jobs when the CVS repository changes (unfortunately we are still stuck polling for now). In the "CVS Polling Log" for the job I see:

CVS Polling Log
Started on Nov 27, 2013 10:42:17 AM
cvs rlog -S -d27 Nov 2013 08:26:12 -0700<27 Nov 2013 10:32:17 -0700 PROJECT
cvs rlog: Logging PROJECT
(snip)
Done. Took 2.2 sec
No changes

And when I type the same command into the command line I get different results:

cvs rlog -S -d"27 Nov 2013 08:26:12 -0700<27 Nov 2013 10:32:17 -0700" PROJECT
cvs rlog: Logging PROJECT
(snip)

RCS file: CVS/PROJECT/FILE.txt,v
head: 1.4
branch:
locks: strict
access list:
keyword substitution: o
total revisions: 4; selected revisions: 1
description:
----------------------------
revision 1.4
date: 2013-11-27 10:32:05 -0700; author: ME; state: Exp; lines: +0 -1; commitid: dNRJCnHf3vUMmWex;
COMMENT
=============================================================================