We random see jobs getting aborted with the stacktraces below.
We see this for long running jobs, which execute a large set of JUnit tests.

Windows 2008 machine (x64)

FATAL: Unable to delete script file C:\Windows\TEMP\hudson7878511792654741097.bat
hudson.util.IOException2: remote file operation failed: C:\Windows\TEMP\hudson7878511792654741097.bat at hudson.remoting.Channel@5a171ae3:srv-nl-crd05
at hudson.FilePath.act(FilePath.java:754)
at hudson.FilePath.act(FilePath.java:740)
at hudson.FilePath.delete(FilePath.java:995)
at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:92)
at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:58)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:19)
at hudson.model.AbstractBuild$AbstractRunner.perform(AbstractBuild.java:693)
at hudson.model.Build$RunnerImpl.build(Build.java:178)
at hudson.model.Build$RunnerImpl.doRun(Build.java:139)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:459)
at hudson.model.Run.run(Run.java:1376)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:230)
Caused by: hudson.remoting.ChannelClosedException: channel is already closed
at hudson.remoting.Channel.send(Channel.java:492)
at hudson.remoting.Request.call(Request.java:110)
at hudson.remoting.Channel.call(Channel.java:674)
at hudson.FilePath.act(FilePath.java:747)
... 13 more
Caused by: hudson.remoting.Channel$OrderlyShutdown
at hudson.remoting.Channel$CloseCommand.execute(Channel.java:819)
at hudson.remoting.Channel$ReaderThread.run(Channel.java:1071)
Caused by: Command close created at
at hudson.remoting.Command.<init>(Command.java:62)
at hudson.remoting.Command.<init>(Command.java:47)
at hudson.remoting.Channel$CloseCommand.<init>(Channel.java:815)
at hudson.remoting.Channel$CloseCommand.<init>(Channel.java:815)
at hudson.remoting.Channel.close(Channel.java:860)
at hudson.slaves.ChannelPinger$1.onDead(ChannelPinger.java:112)
at hudson.remoting.PingThread.ping(PingThread.java:107)
at hudson.remoting.PingThread.run(PingThread.java:81)
FATAL: hudson.remoting.RequestAbortedException: hudson.remoting.Channel$OrderlyShutdown
hudson.remoting.RequestAbortedException: hudson.remoting.RequestAbortedException: hudson.remoting.Channel$OrderlyShutdown
at hudson.remoting.Request.call(Request.java:149)
at hudson.remoting.Channel.call(Channel.java:674)
at hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:158)
at $Proxy35.join(Unknown Source)
at hudson.Launcher$RemoteLauncher$ProcImpl.join(Launcher.java:850)
at hudson.Launcher$ProcStarter.join(Launcher.java:336)
at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:82)
at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:58)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:19)
at hudson.model.AbstractBuild$AbstractRunner.perform(AbstractBuild.java:693)
at hudson.model.Build$RunnerImpl.build(Build.java:178)
at hudson.model.Build$RunnerImpl.doRun(Build.java:139)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:459)
at hudson.model.Run.run(Run.java:1376)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:230)
Caused by: hudson.remoting.RequestAbortedException: hudson.remoting.Channel$OrderlyShutdown
at hudson.remoting.Request.abort(Request.java:273)
at hudson.remoting.Channel.terminate(Channel.java:725)
at hudson.remoting.Channel$CloseCommand.execute(Channel.java:819)
at hudson.remoting.Channel$ReaderThread.run(Channel.java:1071)
Caused by: hudson.remoting.Channel$OrderlyShutdown
... 2 more
Caused by: Command close created at
at hudson.remoting.Command.<init>(Command.java:62)
at hudson.remoting.Command.<init>(Command.java:47)
at hudson.remoting.Channel$CloseCommand.<init>(Channel.java:815)
at hudson.remoting.Channel$CloseCommand.<init>(Channel.java:815)
at hudson.remoting.Channel.close(Channel.java:860)
at hudson.slaves.ChannelPinger$1.onDead(ChannelPinger.java:112)
at hudson.remoting.PingThread.ping(PingThread.java:107)
at hudson.remoting.PingThread.run(PingThread.java:81)

Linux (CentOS x64)
FATAL: Unable to delete script file /tmp/hudson8819356115500333751.sh
hudson.util.IOException2: remote file operation failed: /tmp/hudson8819356115500333751.sh at hudson.remoting.Channel@6d12070a:srv-nl-crd12
at hudson.FilePath.act(FilePath.java:754)
at hudson.FilePath.act(FilePath.java:740)
at hudson.FilePath.delete(FilePath.java:995)
at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:92)
at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:58)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:19)
at hudson.model.AbstractBuild$AbstractRunner.perform(AbstractBuild.java:693)
at hudson.model.Build$RunnerImpl.build(Build.java:178)
at hudson.model.Build$RunnerImpl.doRun(Build.java:139)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:459)
at hudson.model.Run.run(Run.java:1376)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:230)
Caused by: hudson.remoting.ChannelClosedException: channel is already closed
at hudson.remoting.Channel.send(Channel.java:492)
at hudson.remoting.Request.call(Request.java:110)
at hudson.remoting.Channel.call(Channel.java:674)
at hudson.FilePath.act(FilePath.java:747)
... 13 more
Caused by: hudson.remoting.Channel$OrderlyShutdown
at hudson.remoting.Channel$CloseCommand.execute(Channel.java:819)
at hudson.remoting.Channel$ReaderThread.run(Channel.java:1071)
Caused by: Command close created at
at hudson.remoting.Command.<init>(Command.java:62)
at hudson.remoting.Command.<init>(Command.java:47)
at hudson.remoting.Channel$CloseCommand.<init>(Channel.java:815)
at hudson.remoting.Channel$CloseCommand.<init>(Channel.java:815)
at hudson.remoting.Channel.close(Channel.java:860)
at hudson.slaves.ChannelPinger$1.onDead(ChannelPinger.java:112)
at hudson.remoting.PingThread.ping(PingThread.java:107)
at hudson.remoting.PingThread.run(PingThread.java:81)
FATAL: hudson.remoting.RequestAbortedException: hudson.remoting.Channel$OrderlyShutdown
hudson.remoting.RequestAbortedException: hudson.remoting.RequestAbortedException: hudson.remoting.Channel$OrderlyShutdown
at hudson.remoting.Request.call(Request.java:149)
at hudson.remoting.Channel.call(Channel.java:674)
at hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:158)
at $Proxy35.join(Unknown Source)
at hudson.Launcher$RemoteLauncher$ProcImpl.join(Launcher.java:850)
at hudson.Launcher$ProcStarter.join(Launcher.java:336)
at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:82)
at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:58)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:19)
at hudson.model.AbstractBuild$AbstractRunner.perform(AbstractBuild.java:693)
at hudson.model.Build$RunnerImpl.build(Build.java:178)
at hudson.model.Build$RunnerImpl.doRun(Build.java:139)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:459)
at hudson.model.Run.run(Run.java:1376)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:230)
Caused by: hudson.remoting.RequestAbortedException: hudson.remoting.Channel$OrderlyShutdown
at hudson.remoting.Request.abort(Request.java:273)
at hudson.remoting.Channel.terminate(Channel.java:725)
at hudson.remoting.Channel$CloseCommand.execute(Channel.java:819)
at hudson.remoting.Channel$ReaderThread.run(Channel.java:1071)
Caused by: hudson.remoting.Channel$OrderlyShutdown
... 2 more
Caused by: Command close created at
at hudson.remoting.Command.<init>(Command.java:62)
at hudson.remoting.Command.<init>(Command.java:47)
at hudson.remoting.Channel$CloseCommand.<init>(Channel.java:815)
at hudson.remoting.Channel$CloseCommand.<init>(Channel.java:815)
at hudson.remoting.Channel.close(Channel.java:860)
at hudson.slaves.ChannelPinger$1.onDead(ChannelPinger.java:112)
at hudson.remoting.PingThread.ping(PingThread.java:107)
at hudson.remoting.PingThread.run(PingThread.java:81)

Our master is running on CentOS x64.