"Enregistrer sous" sur navigateur

Bonjour,

Lorsque j'éxecute mon applet sur eclipse ça marche sans problème, mais lorsque je le fais à partir du navigateur il me met ceci en erreur :
Code:
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Exception in thread "AWT-EventQueue-2" java.security.AccessControlException: access denied (java.util.PropertyPermission user.dir read)
	at java.security.AccessControlContext.checkPermission(Unknown Source)
	at java.security.AccessController.checkPermission(Unknown Source)
	at java.lang.SecurityManager.checkPermission(Unknown Source)
	at java.lang.SecurityManager.checkPropertyAccess(Unknown Source)
	at java.lang.System.getProperty(Unknown Source)
	at java.io.Win32FileSystem.getUserPath(Unknown Source)
	at java.io.Win32FileSystem.resolve(Unknown Source)
	at java.io.File.getAbsolutePath(Unknown Source)
	at javax.swing.filechooser.WindowsFileSystemView.isFloppyDrive(Unknown Source)
	at javax.swing.plaf.basic.BasicFileChooserUI$BasicFileView.getIcon(Unknown Source)
	at javax.swing.JFileChooser.getIcon(Unknown Source)
	at javax.swing.plaf.metal.MetalFileChooserUI$DirectoryComboBoxRenderer.getListCellRendererComponent(Unknown Source)
	at javax.swing.plaf.basic.BasicListUI.updateLayoutState(Unknown Source)
	at javax.swing.plaf.basic.BasicListUI.maybeUpdateLayoutState(Unknown Source)
	at javax.swing.plaf.basic.BasicListUI$Handler.valueChanged(Unknown Source)
	at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source)
	at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source)
	at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source)
	at javax.swing.DefaultListSelectionModel.changeSelection(Unknown Source)
	at javax.swing.DefaultListSelectionModel.changeSelection(Unknown Source)
	at javax.swing.DefaultListSelectionModel.setSelectionInterval(Unknown Source)
	at javax.swing.JList.setSelectedIndex(Unknown Source)
	at javax.swing.plaf.basic.BasicComboPopup.setListSelection(Unknown Source)
	at javax.swing.plaf.basic.BasicComboPopup.access$300(Unknown Source)
	at javax.swing.plaf.basic.BasicComboPopup$Handler.itemStateChanged(Unknown Source)
	at javax.swing.JComboBox.fireItemStateChanged(Unknown Source)
	at javax.swing.JComboBox.selectedItemChanged(Unknown Source)
	at javax.swing.JComboBox.contentsChanged(Unknown Source)
	at javax.swing.AbstractListModel.fireContentsChanged(Unknown Source)
	at javax.swing.plaf.metal.MetalFileChooserUI$DirectoryComboBoxModel.setSelectedItem(Unknown Source)
	at javax.swing.plaf.metal.MetalFileChooserUI$DirectoryComboBoxModel.addItem(Unknown Source)
	at javax.swing.plaf.metal.MetalFileChooserUI$DirectoryComboBoxModel.access$900(Unknown Source)
	at javax.swing.plaf.metal.MetalFileChooserUI.doDirectoryChanged(Unknown Source)
	at javax.swing.plaf.metal.MetalFileChooserUI.access$1200(Unknown Source)
	at javax.swing.plaf.metal.MetalFileChooserUI$5.propertyChange(Unknown Source)
	at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)
	at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)
	at java.awt.Component.firePropertyChange(Unknown Source)
	at javax.swing.JFileChooser.setCurrentDirectory(Unknown Source)
	at javax.swing.JFileChooser.<init>(Unknown Source)
	at javax.swing.JFileChooser.<init>(Unknown Source)
	at com.actemium.syclopp.analyser.TabCsvFrame.source(TabCsvFrame.java:132)
	at com.actemium.syclopp.analyser.TabCsvFrame.<init>(TabCsvFrame.java:39)
	at com.actemium.syclopp.analyser.RequestManager.exportInCSV(RequestManager.java:174)
	at com.actemium.syclopp.analyser.AnalyserPanel$1.actionPerformed(AnalyserPanel.java:121)
	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
network: Entrée de cache introuvable [URL*: http://localhost/docs/History/20100414/Temp/0000846A10001000_$F.zip, version*: null]
network: Connexion de http://localhost/docs/History/20100414/Temp/0000846A10001000_$F.zip avec proxy=DIRECT
network: Connexion de http://localhost:80/ avec proxy=DIRECT
network: Entrée de cache introuvable [URL*: http://localhost/docs/History/20100414/Temp/000056F510001000_$10.zip, version*: null]
network: Connexion de http://localhost/docs/History/20100414/Temp/000056F510001000_$10.zip avec proxy=DIRECT
C'est à propos d'une fonction qui permet de faire "enregistrer sous"
Avez vous une idée des modifications à apporter ?
Merci