sporadic error message in mailbox.log [btpool0-7] [] log - handle failed

[onicrom]

All,

I am running a fresh install of 7.1.1 on my RHEL6 server, with only one user (myself) using the web gui client, as well as my android device. I am not sure if there is an issue, but I see a recurring error in mailbox.log. Has anyone else seen this, is it an issue?

2011-06-10 14:39:34,270 WARN  [btpool0-7] [] log - handle failed
java.io.IOException: Broken pipe
        at sun.nio.ch.FileDispatcher.write0(Native Method)
        at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:29)
        at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:72)
        at sun.nio.ch.IOUtil.write(IOUtil.java:43)
        at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:334)
        at org.mortbay.io.nio.ChannelEndPoint.flush(ChannelEndPoint.java:170)
        at org.mortbay.io.nio.SelectChannelEndPoint.flush(SelectChannelEndPoint.java:221)
        at org.mortbay.jetty.security.SslHttpChannelEndPoint.flush(SslHttpChannelEndPoint.java:522)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:425)
        at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
        at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:451)