Memory leak on windows in SSHD ServerSession

We use apache-karaf-2.2.9 in windows 2008 server R2.

I've run a lot of Ssh "Echo" in a short time. And the karaf memory peaked,
and we receive out of memory as exception.(see the attached picture
http://karaf.922171.n3.nabble.com/file/n4026025/Jconsole_Karaf.png )

Running jhat shows some classes that should consume such memory:
class org.apache.activemq.command.ProducerId 21706 955064
class org.apache.felix.gogo.runtime.Token 46536 930720
class org.apache.felix.gogo.runtime.Closure 9972 717984
*class org.apache.sshd.server.session.ServerSession 1662 563418
class org.apache.mina.transport.socket.nio.NioSocketSession 1662 511896 *
class [Lorg.apache.activemq.command.DataStructure; 48 393984

The memory leak seems to lie around unclosed ssh server session.

To reproduce the problem, you have just to run this script "loopsshecho.bat"
that will allow to reproduce rapidly the bug
http://karaf.922171.n3.nabble.com/file/n4026025/probes.zip probes.zip :

@echo ON
:again

CALL launch-javaprobe.bat com.eurofins.nagios.probe.ssh.SSHEcho --hostname
Localhost --login karaf --password karaf --sshport 8101
ECHO .
goto again

You have to change the parametrs of :
--hostname
--login
--password
--sshport