This issues has been occurring with increasing frequency. The connection is always lost at the end of a Windows Batch Script build step execution. I've attached all the information that I believe is relevant. If there is additional logging I should enable or other information that is needed, please let me know.

Both the slave and master in this case are physical windows 7 machines. The server has 12 GB of ram and runs Jenkins with a java executable with the following arguments:

<arguments>-Xrs -server -Xincgc -Xmx4096M -Xms4096M -Dhudson.lifecycle=hudson.lifecycle.WindowsServiceLifecycle -jar "%BASE%\jenkins.war" --httpPort=8080</arguments>
Logs from the build:

FATAL: hudson.remoting.RequestAbortedException: java.net.SocketException: Connection reset
hudson.remoting.RequestAbortedException: hudson.remoting.RequestAbortedException: java.net.SocketException: Connection reset
at hudson.remoting.RequestAbortedException.wrapForRethrow(RequestAbortedException.java:41)
at hudson.remoting.RequestAbortedException.wrapForRethrow(RequestAbortedException.java:34)
at hudson.remoting.Request.call(Request.java:174)
at hudson.remoting.Channel.call(Channel.java:722)
at hudson.Launcher$RemoteLauncher.kill(Launcher.java:887)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:588)
at hudson.model.Run.execute(Run.java:1670)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:231)
Caused by: hudson.remoting.RequestAbortedException: java.net.SocketException: Connection reset
at hudson.remoting.Request.abort(Request.java:299)
at hudson.remoting.Channel.terminate(Channel.java:782)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:69)
Caused by: java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:196)
at java.net.SocketInputStream.read(SocketInputStream.java:122)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
at java.io.BufferedInputStream.read(BufferedInputStream.java:254)
at hudson.remoting.FlightRecorderInputStream.read(FlightRecorderInputStream.java:77)
at java.io.ObjectInputStream$PeekInputStream.peek(ObjectInputStream.java:2293)
at java.io.ObjectInputStream$BlockDataInputStream.peek(ObjectInputStream.java:2586)
at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2596)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1318)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at hudson.remoting.Command.readFrom(Command.java:92)
at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:71)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)

Logs from jenkins.err.log:

SEVERE: I/O error in channel <NODENAME>
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:196)
at java.net.SocketInputStream.read(SocketInputStream.java:122)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
at java.io.BufferedInputStream.read(BufferedInputStream.java:254)
at hudson.remoting.FlightRecorderInputStream.read(FlightRecorderInputStream.java:77)
at java.io.ObjectInputStream$PeekInputStream.peek(ObjectInputStream.java:2293)
at java.io.ObjectInputStream$BlockDataInputStream.peek(ObjectInputStream.java:2586)
at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2596)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1318)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at hudson.remoting.Command.readFrom(Command.java:92)
at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:71)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)

May 04, 2014 1:32:38 PM jenkins.slaves.JnlpSlaveAgentProtocol$Handler$1 onClosed
WARNING: Channel reader thread: <NODENAME> for + <NODENAME> terminated
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:196)
at java.net.SocketInputStream.read(SocketInputStream.java:122)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
at java.io.BufferedInputStream.read(BufferedInputStream.java:254)
at hudson.remoting.FlightRecorderInputStream.read(FlightRecorderInputStream.java:77)
at java.io.ObjectInputStream$PeekInputStream.peek(ObjectInputStream.java:2293)
at java.io.ObjectInputStream$BlockDataInputStream.peek(ObjectInputStream.java:2586)
at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2596)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1318)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at hudson.remoting.Command.readFrom(Command.java:92)
at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:71)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)

May 04, 2014 1:32:48 PM hudson.model.Run execute
INFO: TestReport #691 main build action completed: SUCCESS
May 04, 2014 1:33:04 PM hudson.model.Run execute