Read timed out on agent

I am running LoadUI test in distributed mode and when I stop the test, agent logs are flooded with the errors:

12:41:23,306 ERROR [WsdlSubmit] Exception in request: java.net.SocketTimeoutException: Read timed out
12:41:23,306 ERROR [SoapUI] An error occured [Read timed out], see error log for details
java.net.SocketTimeoutException: Read timed out
        at java.net.SocketInputStream.socketRead0(Native Method)
        at java.net.SocketInputStream.read(Unknown Source)
        at java.io.BufferedInputStream.fill(Unknown Source)
        at java.io.BufferedInputStream.read(Unknown Source)
        at org.apache.commons.httpclient.HttpParser.readRawLine(HttpParser.java:78)
        at org.apache.commons.httpclient.HttpParser.readLine(HttpParser.java:106)
        at org.apache.commons.httpclient.HttpConnection.readLine(HttpConnection.java:1116)
        at com.eviware.soapui.impl.wsdl.support.http.SoapUIMultiThreadedHttpConnectionManager$HttpConnectionAdapter.readLine(SoapUIMultiThreadedHttpConnectionManager.java:1706)
        at org.apache.commons.httpclient.HttpMethodBase.readStatusLine(HttpMethodBase.java:1973)
        at org.apache.commons.httpclient.HttpMethodBase.readResponse(HttpMethodBase.java:1735)
        at com.eviware.soapui.impl.wsdl.submit.transports.http.support.methods.ExtendedPostMethod.readResponse(ExtendedPostMethod.java:80)
        at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:1098)
        at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:398)
        at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
        at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
        at com.eviware.soapui.impl.wsdl.submit.transports.http.HttpClientRequestTransport.sendRequest(HttpClientRequestTransport.java:202)
        at com.eviware.soapui.impl.wsdl.WsdlSubmit.run(WsdlSubmit.java:123)
        at com.eviware.soapui.impl.wsdl.WsdlSubmit.submitRequest(WsdlSubmit.java:76)
        at com.eviware.soapui.impl.wsdl.WsdlRequest.submit(WsdlRequest.java:238)
        at com.eviware.soapui.impl.wsdl.teststeps.WsdlTestRequestStep.run(WsdlTestRequestStep.java:366)
        at com.eviware.soapui.impl.wsdl.support.AbstractTestCaseRunner.runTestStep(AbstractTestCaseRunner.java:232)
        at com.eviware.soapui.impl.wsdl.testcase.WsdlTestCaseRunner.runCurrentTestStep(WsdlTestCaseRunner.java:48)
        at com.eviware.soapui.impl.wsdl.support.AbstractTestCaseRunner.internalRun(AbstractTestCaseRunner.java:141)
        at com.eviware.soapui.impl.wsdl.support.AbstractTestCaseRunner.internalRun(AbstractTestCaseRunner.java:42)
        at com.eviware.soapui.impl.wsdl.support.AbstractTestRunner.run(AbstractTestRunner.java:135)
        at com.eviware.loadui.components.soapui.SoapUISamplerComponent$SoapUITestCaseRunner.run(SoapUISamplerComponent.java:975)
        at com.eviware.loadui.components.soapui.SoapUISamplerComponent.sample(SoapUISamplerComponent.java:831)
        at com.eviware.loadui.impl.component.categories.RunnerBase.doSample(RunnerBase.java:496)
        at com.eviware.loadui.impl.component.categories.RunnerBase.access$700(RunnerBase.java:70)
        at com.eviware.loadui.impl.component.categories.RunnerBase$Worker.run(RunnerBase.java:773)
        at com.eviware.loadui.util.dispatch.CustomThreadPoolExecutor$Worker.run(CustomThreadPoolExecutor.java:188)
        at java.lang.Thread.run(Unknown Source)

It happens each time the test is stopped.

Can you please advise what can be done?

P.S. LoadUI agent is started like this:

 sudo ./loadUI-agent.sh -Dloadui.https.port=4711 -Dloadui.http.port=1337