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IcedTea bug report:
http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=1516

** Bug watch added: Iced Tea Bugzilla #1516
   http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=1516

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https://bugs.launchpad.net/bugs/1204906

Title:
  NetBeans, VisualVM, etc. broken with latest security release for 12.04

Status in Java OpenStreetMap editor:
  Unknown
Status in “openjdk-6” package in Ubuntu:
  Confirmed

Bug description:
  The latest security update of OpenJDK 6 appears to have broken
  NetBeans and other NetBeans platform based applications such as
  VisualVM. It may break many other Swing applications - not tested.
  Manifests as UI issues, NPE's and lockups (eg. find usages dialog
  hangs NetBeans).  One stack trace shows EventQueue.isDispatchThread()
  returning false from within the dispatch thread.

  All is fine in current OpenJDK 7.  Looking at NetBeans on OpenJDK 6
  from VisualVM (running on 7!) shows multiple AWT event queues and
  sometimes deadlock between them. Same result is not seen when running
  NetBeans with OpenJDK 7.

  Running on 12.04 with OpenJDK-6-JRE 6b27-1.12.6-1ubuntu0.12.04.2

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