servicemix Permgen issue

In Java 6 the memory in Permgen is never garbage-collected, so it will increase and increase as long as servicemix is running. Eventually permgen will be full and the JVM will no longer be able to function.  Also permgen contains class metadata so the more bundles we install the more permgen space we use. Again, when we uninstall bundles the memory they were using in permgen is never reclaimed.