diff -ur xfdesktop-4.8.0/src/xfdesktop-file-icon-manager.c xfdesktop-4.8.0.new/src/xfdesktop-file-icon-manager.c
--- xfdesktop-4.8.0/src/xfdesktop-file-icon-manager.c	2011-01-16 16:39:03.000000000 +0000
+++ xfdesktop-4.8.0.new/src/xfdesktop-file-icon-manager.c	2011-02-27 17:18:29.000000000 +0000
@@ -2384,6 +2384,55 @@
 }
 
 static void
+xfdesktop_file_icon_manager_mount_added(GVolumeMonitor *monitor,
+                                         GMount *mount,
+                                         gpointer user_data)
+{
+    GVolume *volume = g_mount_get_volume(mount);
+    XfdesktopVolumeIcon *icon;
+    if (  volume ){
+        XfdesktopFileIconManager *fmanager = 
+                                    XFDESKTOP_FILE_ICON_MANAGER(user_data);
+        icon = g_hash_table_lookup(fmanager->priv->removable_icons, volume);
+        xfdesktop_volume_icon_refresh_volume(icon);
+        g_object_unref(volume);
+    }
+}
+
+static void
+xfdesktop_file_icon_manager_mount_removed(GVolumeMonitor *monitor,
+                                         GMount *mount,
+                                         gpointer user_data)
+{
+    GVolume *volume;
+    GList *volumes;
+    GList *l;
+    GMount *vol_mount;
+    XfdesktopFileIconManager *fmanager = 
+                                    XFDESKTOP_FILE_ICON_MANAGER(user_data);
+    volumes = g_volume_monitor_get_volumes(monitor);
+    char *name;
+    XfdesktopVolumeIcon *icon;
+    /*  we don't know which volume was unmounted so test all volumes 
+        and refresh all unmounted volume icons */
+    for(l = volumes; l; l = l->next) {
+        volume = l->data;
+        vol_mount = g_volume_get_mount(volume);
+        if ( ! vol_mount ) {
+            icon = g_hash_table_lookup(fmanager->priv->removable_icons, 
+                                                volume);
+            if (icon ) {
+                name = g_volume_get_name(volume);
+                xfdesktop_volume_icon_refresh_volume(icon);
+                g_free(name);
+            }
+        }
+        g_object_unref(l->data);
+    }
+    g_list_free(volumes);
+}
+
+static void
 xfdesktop_file_icon_manager_volume_added(GVolumeMonitor *monitor,
                                          GVolume *volume,
                                          gpointer user_data)
@@ -2442,6 +2491,13 @@
     g_signal_connect(G_OBJECT(fmanager->priv->volume_monitor), "volume-removed",
                      G_CALLBACK(xfdesktop_file_icon_manager_volume_removed),
                      fmanager);
+    g_signal_connect(G_OBJECT(fmanager->priv->volume_monitor),"mount-added",
+                     G_CALLBACK(xfdesktop_file_icon_manager_mount_added),
+                     fmanager);
+    g_signal_connect(G_OBJECT(fmanager->priv->volume_monitor),
+                     "mount-removed",
+                     G_CALLBACK(xfdesktop_file_icon_manager_mount_removed),
+                     fmanager);
 }
 
 static void
diff -ur xfdesktop-4.8.0/src/xfdesktop-volume-icon.c xfdesktop-4.8.0.new/src/xfdesktop-volume-icon.c
--- xfdesktop-4.8.0/src/xfdesktop-volume-icon.c	2011-01-16 16:39:03.000000000 +0000
+++ xfdesktop-4.8.0.new/src/xfdesktop-volume-icon.c	2011-02-27 16:44:31.000000000 +0000
@@ -835,3 +835,45 @@
     g_return_val_if_fail(XFDESKTOP_IS_VOLUME_ICON(icon), NULL);
     return icon->priv->volume;
 }
+
+gboolean
+xfdesktop_volume_icon_refresh_volume(XfdesktopVolumeIcon *icon)
+{
+    GMount *mount;
+    GVolume *volume;
+    g_return_val_if_fail(XFDESKTOP_IS_VOLUME_ICON(icon), FALSE);
+    volume = icon->priv->volume;
+    mount = g_volume_get_mount(volume);
+    if ( mount ){
+        if ( icon->priv->file )
+            g_object_unref(icon->priv->file);
+        icon->priv->file = g_mount_get_root(mount);
+        if (icon->priv->file_info)
+            g_object_unref(icon->priv->file_info);
+        icon->priv->file_info = g_file_query_info(icon->priv->file,
+                       XFDESKTOP_FILE_INFO_NAMESPACE, G_FILE_QUERY_INFO_NONE,
+                       NULL, NULL);
+        if (icon->priv->filesystem_info)
+            g_object_unref(icon->priv->filesystem_info);
+        icon->priv->filesystem_info = 
+                g_file_query_filesystem_info(icon->priv->file,
+                XFDESKTOP_FILESYSTEM_INFO_NAMESPACE,
+                NULL, NULL);
+        
+        g_object_unref(mount);
+    } else {
+        if (icon->priv->file)
+            g_object_unref(icon->priv->file);
+        icon->priv->file = NULL;
+        if (icon->priv->file_info)
+            g_object_unref(icon->priv->file_info);
+        icon->priv->file_info = NULL;
+        if (icon->priv->filesystem_info)
+            g_object_unref(icon->priv->filesystem_info);
+        icon->priv->filesystem_info = NULL;
+            g_free(icon->priv->tooltip);
+        icon->priv->tooltip = NULL;
+    }
+    return TRUE;
+}
+
diff -ur xfdesktop-4.8.0/src/xfdesktop-volume-icon.h xfdesktop-4.8.0.new/src/xfdesktop-volume-icon.h
--- xfdesktop-4.8.0/src/xfdesktop-volume-icon.h	2011-01-16 16:39:03.000000000 +0000
+++ xfdesktop-4.8.0.new/src/xfdesktop-volume-icon.h	2011-02-27 16:45:08.000000000 +0000
@@ -56,6 +56,8 @@
 GVolume *xfdesktop_volume_icon_peek_volume(XfdesktopVolumeIcon *icon);
 
 
+gboolean xfdesktop_volume_icon_refresh_volume(XfdesktopVolumeIcon *icon);
+
 G_END_DECLS
 
 #endif /* __XFDESKTOP_VOLUME_ICON_H__ */
Only in xfdesktop-4.8.0: xfdesktop.spec