diff --git a/gui/adapt.py b/gui/adapt.py
index aab72b4..f3b7bfc 100644
--- a/gui/adapt.py
+++ b/gui/adapt.py
@@ -19,16 +19,28 @@ import gdb
 import gui.params
 
 bugs = {
-    "15620": """Your gdb doesn't have a "new breakpoint" event.
+    15620: """Your gdb doesn't have a "new breakpoint" event.
 This means that the source windows will not show you where
 breakpoints have been set.""",
 
-    "13598": """Your gdb doesn't have a "before prompt" event.
+    13598: """Your gdb doesn't have a "before prompt" event.
 This means that various windows won't be able to react to
 commands like "up" or "down"."""
 }
 
+_warning = "See https://sourceware.org/bugzilla/show_bug.cgi?id=%s for more information."
+
 _first_report = True
 
 def notify_bug(bugno):
-    
+    if not gui.params.warn_missing.value:
+        return
+    if not (bugno in bugs):
+        return
+    print "################"
+    print bugs[bugno]
+    print _warning % bugno
+    print ""
+    print "You can use 'set gui mention-missing off' to disable this message."
+    print "################"
+    del bugs[bugno]
diff --git a/gui/framecache.py b/gui/framecache.py
index faa8d4f..dbdaf2c 100644
--- a/gui/framecache.py
+++ b/gui/framecache.py
@@ -15,6 +15,7 @@
 
 import gdb
 import gui.events
+import gui.adapt
 
 _last_selected_frame = None
 
@@ -32,3 +33,5 @@ def check_frame():
 # See my gdb branch on github.
 if hasattr(gdb.events, 'before_prompt'):
     gdb.events.before_prompt.connect(check_frame)
+else:
+    gui.adapt.notify_bug(13598)
diff --git a/gui/params.py b/gui/params.py
index e324133..4cc59cf 100644
--- a/gui/params.py
+++ b/gui/params.py
@@ -170,6 +170,25 @@ class _Title(_StoredParameter):
         gui.toplevel.state.update_titles()
         return ""
 
+class _Missing(_StoredParameter):
+    # Silly gdb requirement.
+    ""
+
+    set_doc = "Set whether to mention missing gdb features."
+    show_doc = "Show whether to mention missing gdb features."
+
+    def __init__(self):
+        super(_Missing, self).__init__('%s', 'mention-missing', True,
+                                       gdb.COMMAND_NONE, gdb.PARAM_BOOLEAN)
+
+    @in_gdb_thread
+    def get_show_string(self, pvalue):
+        if self.value:
+            v = "on"
+        else:
+            v = "off"
+        return "Whether to warn about missing gdb features: " + v
+
 _SetBase()
 _SetTitleBase()
 _ShowBase()
@@ -180,3 +199,5 @@ font_manager = _Font()
 _Title('source', '\\W{basename} [GDB Source @\\W{number}]')
 _Title('display', '\\W{command} [GDB Display @\\W{number}]')
 _Title('log', '[GDB Log @\\W{number}]\\W{default}')
+
+warn_missing = _Missing()