ConfigInstallTest fails semi-randomly: Configuration is still present

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Test set: org.apache.sling.installer.it.ConfigInstallTest
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Tests run: 3, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 17.044 sec <<< FAILURE!
testDeferredConfigInstall [felix](org.apache.sling.installer.it.ConfigInstallTest) Time elapsed: 10.072 sec <<< FAILURE!
java.lang.AssertionError: Config must be removed once ConfigurationAdmin restarts: Configuration is still present (ConfigInstallTest.deferred.1285097628299)
at org.junit.Assert.fail(Assert.java:74)
at org.apache.sling.installer.it.OsgiInstallerTestBase.waitForConfiguration(OsgiInstallerTestBase.java:246)
at org.apache.sling.installer.it.ConfigInstallTest.testDeferredConfigInstall(ConfigInstallTest.java:149)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.ops4j.pax.exam.junit.extender.impl.internal.CallableTestMethodImpl.injectContextAndInvoke(CallableTestMethodImpl.java:143)
at org.ops4j.pax.exam.junit.extender.impl.internal.CallableTestMethodImpl.call(CallableTestMethodImpl.java:105)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.ops4j.pax.exam.rbc.internal.RemoteBundleContextImpl.remoteCall(RemoteBundleContextImpl.java:80)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
at sun.rmi.transport.Transport$1.run(Transport.java:159)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)