diff --git a/runtime/doc/todo.txt b/runtime/doc/todo.txt
index 06be30b..d9351d9 100644
--- a/runtime/doc/todo.txt
+++ b/runtime/doc/todo.txt
@@ -1088,18 +1088,17 @@
 - using NSIS 2.46: install on Windows 7 works, but no "Edit with Vim" menu.
    Use register_shell_extension()? (George Reilly, 2010 May 26)
    Ron's version: http://dev.ronware.org/p/vim/finfo?name=gvim.nsi
-- Patch for conceal from Vince, 2010 Jun 15.  And another June 16.
-  However: more generic patch on the way.
+- Patch for conceal feature from Vince, 2010 June 16.
+  Needs some more testing.
 - undofile: keep markers where the file was written/read, so that it's easy to
   go back to a saved version of the file:  ":earlier 1f" (f for file)?
   Also add ":earlier 1d" (d for day).
   Something like changenr() to see the "file saved" marker?
   Show "file saved" marker in :undolist
-  Function to get undo tree: undotree().  List of lists.  Each entry is a
+- Function to get undo tree: undotree().  List of lists.  Each entry is a
   dictionary: {'nr': 2, 'time': 1234, 'saved': 1}
-- Remove support for GTK 1?  Patch by James Vega, Jun 11.
+- Remove support for GTK 1?  Patch by James Vega, Jun 11 (removes too much).
 Patches to include:
-- Patch for X clibboard CurrentTime, (Fries, 2010 Jun 20)
 - Patch for Lisp support with ECL (Mikael Jansson, 2008 Oct 25)
 - Minor patches from Dominique Pelle, 2010 May 15
 - Gvimext patch to support wide file names. (Szabolcs Horvat 2008 Sep 10)
diff --git a/src/gui_gtk_x11.c b/src/gui_gtk_x11.c
index 2db203b..5cbe9a3 100644
--- a/src/gui_gtk_x11.c
+++ b/src/gui_gtk_x11.c
@@ -88,6 +88,7 @@
 
 #ifdef HAVE_X11_SUNKEYSYM_H
 # include <X11/Sunkeysym.h>
+static guint32 clipboard_event_time = CurrentTime;
 #endif
 
 /*
@@ -996,6 +997,7 @@
     guint	state;
     char_u	*s, *d;
 
+    clipboard_event_time = event->time;
     key_sym = event->keyval;
     state = event->state;
 #ifndef HAVE_GTK2 /* deprecated */
@@ -1258,6 +1260,7 @@
 		  GdkEventKey *event,
 		  gpointer data UNUSED)
 {
+    clipboard_event_time = event->time;
     /*
      * GTK+ 2 input methods may do fancy stuff on key release events too.
      * With the default IM for instance, you can enter any UCS code point
@@ -1870,6 +1873,8 @@
     int x, y;
     int_u vim_modifiers;
 
+    clipboard_event_time = event->time;
+
     /* Make sure we have focus now we've been selected */
     if (gtk_socket_id != 0 && !GTK_WIDGET_HAS_FOCUS(widget))
 	gtk_widget_grab_focus(widget);
@@ -1989,6 +1994,8 @@
     int x, y;
     int_u vim_modifiers;
 
+    clipboard_event_time = event->time;
+
     /* Remove any motion "machine gun" timers used for automatic further
        extension of allocation areas if outside of the applications window
        area .*/
@@ -6883,7 +6890,7 @@
     int success;
 
     success = gtk_selection_owner_set(gui.drawarea, cbd->gtk_sel_atom,
-				      (guint32)GDK_CURRENT_TIME);
+				      clipboard_event_time);
     gui_mch_update();
     return (success) ? OK : FAIL;
 }
diff --git a/src/os_unix.c b/src/os_unix.c
index 4cb1d4a..365e965 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -6466,6 +6466,7 @@
 	    return;
 
 	x11_setup_atoms(xterm_dpy);
+	x11_setup_selection(xterm_Shell);
 	if (x11_display == NULL)
 	    x11_display = xterm_dpy;
 
diff --git a/src/proto/ui.pro b/src/proto/ui.pro
index 87cee8b..b022baa 100644
--- a/src/proto/ui.pro
+++ b/src/proto/ui.pro
@@ -47,6 +47,7 @@
 int check_row __ARGS((int row));
 void open_app_context __ARGS((void));
 void x11_setup_atoms __ARGS((Display *dpy));
+void x11_setup_selection __ARGS((Widget myShell));
 void clip_x11_request_selection __ARGS((Widget myShell, Display *dpy, VimClipboard *cbd));
 void clip_x11_lose_selection __ARGS((Widget myShell, VimClipboard *cbd));
 int clip_x11_own_selection __ARGS((Widget myShell, VimClipboard *cbd));
diff --git a/src/ui.c b/src/ui.c
index 9ca902b..a925def 100644
--- a/src/ui.c
+++ b/src/ui.c
@@ -467,11 +467,15 @@
      * Also want to check somehow that we are reading from the keyboard rather
      * than a mapping etc.
      */
-    if (!cbd->owned && cbd->available)
-    {
-	cbd->owned = (clip_gen_own_selection(cbd) == OK);
 #ifdef FEAT_X11
-	if (cbd == &clip_star)
+    /* Always own the selection, we might have lost it without being
+     * notified. */
+    if (cbd->available)
+    {
+	int was_owned = cbd->owned;
+
+	cbd->owned = (clip_gen_own_selection(cbd) == OK);
+	if (!was_owned && cbd == &clip_star)
 	{
 	    /* May have to show a different kind of highlighting for the
 	     * selected area.  There is no specific redraw command for this,
@@ -483,8 +487,12 @@
 		    && hl_attr(HLF_V) != hl_attr(HLF_VNC))
 		redraw_curbuf_later(INVERTED_ALL);
 	}
-#endif
     }
+#else
+    /* Only own the clibpard when we didn't own it yet. */
+    if (!cbd->owned && cbd->available)
+	cbd->owned = (clip_gen_own_selection(cbd) == OK);
+#endif
 }
 
     void
@@ -1967,6 +1975,7 @@
 static Atom	compound_text_atom;
 static Atom	text_atom;
 static Atom	targets_atom;
+static Atom	timestamp_atom;	/* Used to get a timestamp */
 
     void
 x11_setup_atoms(dpy)
@@ -1978,15 +1987,70 @@
 #endif
     compound_text_atom = XInternAtom(dpy, "COMPOUND_TEXT", False);
     text_atom	       = XInternAtom(dpy, "TEXT",	   False);
-    targets_atom       = XInternAtom(dpy, "TARGETS",       False);
+    targets_atom       = XInternAtom(dpy, "TARGETS",	   False);
     clip_star.sel_atom = XA_PRIMARY;
-    clip_plus.sel_atom = XInternAtom(dpy, "CLIPBOARD",     False);
+    clip_plus.sel_atom = XInternAtom(dpy, "CLIPBOARD",	   False);
+    timestamp_atom     = XInternAtom(dpy, "TIMESTAMP",	   False);
 }
 
 /*
  * X Selection stuff, for cutting and pasting text to other windows.
  */
 
+static Boolean	clip_x11_convert_selection_cb __ARGS((Widget, Atom *, Atom *, Atom *, XtPointer *, long_u *, int *));
+
+static void  clip_x11_lose_ownership_cb __ARGS((Widget, Atom *));
+
+static void clip_x11_timestamp_cb __ARGS((Widget w, XtPointer n, XEvent *event, Boolean *cont));
+
+/*
+ * Property callback to get a timestamp for XtOwnSelection.
+ */
+    static void
+clip_x11_timestamp_cb(w, n, event, cont)
+    Widget	w;
+    XtPointer	n UNUSED;
+    XEvent	*event;
+    Boolean	*cont UNUSED;
+{
+    Atom	    actual_type;
+    int		    format;
+    unsigned  long  nitems, bytes_after;
+    unsigned char   *prop=NULL;
+    XPropertyEvent  *xproperty=&event->xproperty;
+
+    /* Must be a property notify, state can't be Delete (True), has to be
+     * one of the supported selection types. */
+    if (event->type != PropertyNotify || xproperty->state
+	    || (xproperty->atom != clip_star.sel_atom
+				    && xproperty->atom != clip_plus.sel_atom))
+	return;
+
+    if (XGetWindowProperty(xproperty->display, xproperty->window,
+	  xproperty->atom, 0, 0, False, timestamp_atom, &actual_type, &format,
+						&nitems, &bytes_after, &prop))
+	return;
+
+    if (prop)
+	XFree(prop);
+
+    /* Make sure the property type is "TIMESTAMP" and it's 32 bits. */
+    if (actual_type != timestamp_atom || format != 32)
+	return;
+
+    /* Get the selection, using the event timestamp. */
+    XtOwnSelection(w, xproperty->atom, xproperty->time,
+	    clip_x11_convert_selection_cb, clip_x11_lose_ownership_cb, NULL);
+}
+
+    void
+x11_setup_selection(w)
+    Widget	w;
+{
+    XtAddEventHandler(w, PropertyChangeMask, False,
+	    /*(XtEventHandler)*/clip_x11_timestamp_cb, (XtPointer)NULL);
+}
+
 static void  clip_x11_request_selection_cb __ARGS((Widget, XtPointer, Atom *, Atom *, XtPointer, long_u *, int *));
 
     static void
@@ -2186,8 +2250,6 @@
     yank_cut_buffer0(dpy, cbd);
 }
 
-static Boolean	clip_x11_convert_selection_cb __ARGS((Widget, Atom *, Atom *, Atom *, XtPointer *, long_u *, int *));
-
     static Boolean
 clip_x11_convert_selection_cb(w, sel_atom, target, type, value, length, format)
     Widget	w UNUSED;
@@ -2315,8 +2377,6 @@
     return True;
 }
 
-static void  clip_x11_lose_ownership_cb __ARGS((Widget, Atom *));
-
     static void
 clip_x11_lose_ownership_cb(w, sel_atom)
     Widget  w UNUSED;
@@ -2341,10 +2401,13 @@
     Widget	myShell;
     VimClipboard	*cbd;
 {
-    if (XtOwnSelection(myShell, cbd->sel_atom, CurrentTime,
-	    clip_x11_convert_selection_cb, clip_x11_lose_ownership_cb,
-							       NULL) == False)
+    /* Get the time by a zero-length append, clip_x11_timestamp_cb will be
+     * called with the current timestamp.  */
+    if (!XChangeProperty(XtDisplay(myShell), XtWindow(myShell), cbd->sel_atom,
+	    timestamp_atom, 32, PropModeAppend, NULL, 0))
 	return FAIL;
+    /* Flush is required in a terminal as nothing else is doing it. */
+    XFlush(XtDisplay(myShell));
     return OK;
 }