Many users are reporting hangs that look like this (reverse stack trace from YourKit): java.awt.EventDispatchThread.run() com.intellij.ide.IdeEventQueue.dispatchEvent(AWTEvent) com.intellij.ide.IdeEventQueue.a(AWTEvent) com.intellij.ide.IdeEventQueue.b(AWTEvent) java.awt.EventQueue.dispatchEvent(AWTEvent) com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(MouseEvent) com.intellij.ui.plaf.beg.BegMenuItemUI.access$300(BegMenuItemUI, MenuSelectionManager, MouseEvent) com.intellij.ui.plaf.beg.BegMenuItemUI.a(MenuSelectionManager, MouseEvent) com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionEvent) javax.swing.AbstractButton.fireActionPerformed(ActionEvent) com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionEvent) com.intellij.ide.actions.ShowModulePropertiesAction.actionPerformed(AnActionEvent) com.intellij.openapi.roots.ui.configuration.ModulesConfigurator.showDialog(Project, String, String, boolean) com.intellij.ide.actions.ShowSettingsUtilImpl.editConfigurable(Project, Configurable, Runnable) com.intellij.openapi.ui.DialogWrapper.show() com.intellij.openapi.ui.impl.DialogWrapperPeerImpl.show() com.intellij.openapi.ui.impl.DialogWrapperPeerImpl$MyDialog.show() java.awt.Dialog.show() com.intellij.ide.IdeEventQueue.dispatchEvent(AWTEvent) com.intellij.ide.IdeEventQueue.a(AWTEvent) com.intellij.ide.IdeEventQueue.b(AWTEvent) java.awt.EventQueue.dispatchEvent(AWTEvent) com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(MouseEvent) com.intellij.ui.plaf.beg.BegMenuItemUI.access$300(BegMenuItemUI, MenuSelectionManager, MouseEvent) com.intellij.ui.plaf.beg.BegMenuItemUI.a(MenuSelectionManager, MouseEvent) com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionEvent) javax.swing.AbstractButton.fireActionPerformed(ActionEvent) com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionEvent) com.intellij.openapi.roots.ui.configuration.projectRoot.AddAction$3.actionPerformed(AnActionEvent) com.intellij.openapi.roots.ui.configuration.libraryEditor.LibraryTableEditor$AddLibraryAction.actionPerformed(ActionEvent) com.intellij.openapi.roots.ui.configuration.libraryEditor.LibraryFileChooser.chooseNameAndFiles() com.intellij.openapi.roots.ui.configuration.libraryEditor.LibraryFileChooser.chooseNameAndFiles(VirtualFile) com.intellij.openapi.fileChooser.ex.FileChooserDialogImpl.choose(VirtualFile, Project) com.intellij.openapi.ui.DialogWrapper.show() com.intellij.openapi.ui.impl.DialogWrapperPeerImpl.show() com.intellij.openapi.ui.impl.DialogWrapperPeerImpl$MyDialog.show() java.awt.Dialog.show() com.intellij.ide.IdeEventQueue.dispatchEvent(AWTEvent) com.intellij.ide.IdeEventQueue.a(AWTEvent) com.intellij.ide.IdeEventQueue.b(AWTEvent) java.awt.EventQueue.dispatchEvent(AWTEvent) com.intellij.util.ui.Tree.processMouseEvent(MouseEvent) javax.swing.JComponent.processMouseEvent(MouseEvent) com.intellij.openapi.fileChooser.ex.FileSystemTreeImpl$4.treeExpanded(TreeExpansionEvent) com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(Runnable) com.intellij.openapi.fileChooser.ex.FileSystemTreeImpl$4$1.run() com.intellij.openapi.vfs.VirtualFile.refresh(boolean, boolean) com.intellij.openapi.vfs.impl.local.VirtualFileImpl.refresh(boolean, boolean, Runnable) com.intellij.openapi.vfs.impl.local.VirtualFileImpl.refresh(boolean, boolean, boolean, Runnable) com.intellij.openapi.vfs.impl.local.VirtualFileImpl$4.run() com.intellij.openapi.vfs.impl.VirtualFileManagerImpl.afterRefreshFinish(boolean, ModalityState) com.intellij.openapi.vfs.impl.VirtualFileManagerImpl$2.run() com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(Runnable) com.intellij.openapi.vfs.impl.VirtualFileManagerImpl$2$1.run() com.intellij.openapi.vfs.impl.local.VirtualFileImpl$9.run() com.intellij.openapi.vfs.impl.local.LocalFileSystemImpl.fireBeforeFileDeletion(Object, VirtualFile) com.intellij.openapi.vfs.VirtualFileSystem.fireBeforeFileDeletion(Object, VirtualFile) $Proxy1.beforeFileDeletion(VirtualFileEvent) com.intellij.util.PendingEventDispatcher$1.invoke(Object, Method, Object[]) com.intellij.util.PendingEventDispatcher.access$100(PendingEventDispatcher, Method, Object[]) com.intellij.util.PendingEventDispatcher.a(Method, Object[]) com.intellij.util.PendingEventDispatcher.a(EventListener) java.lang.reflect.Method.invoke(Object, Object[]) com.intellij.codeInsight.problems.WolfTheProblemSolverImpl$3.beforeFileDeletion(VirtualFileEvent) com.intellij.codeInsight.problems.WolfTheProblemSolverImpl$3.a(VirtualFile) com.intellij.codeInsight.problems.WolfTheProblemSolverImpl$3.a(VirtualFile) com.intellij.codeInsight.problems.WolfTheProblemSolverImpl$3.a(VirtualFile) com.intellij.codeInsight.problems.WolfTheProblemSolverImpl$3.a(VirtualFile) com.intellij.codeInsight.problems.WolfTheProblemSolverImpl$3.a(VirtualFile) com.intellij.codeInsight.problems.WolfTheProblemSolverImpl$3.a(VirtualFile) com.intellij.codeInsight.problems.WolfTheProblemSolverImpl$3.a(VirtualFile) com.intellij.openapi.vfs.impl.local.VirtualFileImpl.getChildren() com.intellij.openapi.vfs.impl.local.IoFile.isDirectory() java.io.File.isDirectory() Most users just kill idea from the command line because IDEA "never" unfreezes.