diff --git a/hbd b/hbd
index 60aaf5c..e86fcd7 100755
--- a/hbd
+++ b/hbd
@@ -55,6 +55,7 @@ verbose = False
 
 INTERVAL = 10
 GRACE = 2
+DROPOVERDUE = 7*24*3600
 
 os.environ['TZ'] = 'EST5EDT'
 
@@ -305,6 +306,8 @@ def checkoverdue():
 			if conn.state == Connection.up and (now - conn.lastbeat) > timeout:
 				conn.newstate(Connection.overdue, now, grace)
 				pmsg.append(conn.afam)
+			if conn.state == Connection.overdue and (now - conn.lastbeat) > DROPOVERDUE:
+				conn.newstate(Connection.unknown, conn.lastbeat)
 		if pmsg != []:
 			if h in watchhosts:
 				email("overdue", "%s overdue" % " and ".join(pmsg))
diff --git a/hbdclass.py b/hbdclass.py
index 9042a81..b131354 100644
--- a/hbdclass.py
+++ b/hbdclass.py
@@ -51,6 +51,8 @@ class Connection:
 			d['addr'] = self.addr
 			if self.rtts[-1]:
 				d['rtt'] = "%0.1f" % self.rtts[-1]
+			elif self.state == Connection.unknown:
+				d['rtt'] = ""
 			else:
 				d['rtt'] = "?"
 			d['lastbeat'] = self.lastbeat
@@ -60,11 +62,16 @@ class Connection:
 				d['state'] = self.state
 			if self.state == Connection.up:
 				d['rttstate'] = d['rtt']
+			elif self.state == Connection.overdue:
+				d['rttstate'] = ''
 			else:
 				d['rttstate'] = d['state']
 			d['statetime'] = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(self.statetime))
 			delta = now - self.statetime
-			if delta > 86400:
+
+			if self.state == Connection.unknown:
+				d['deltastatetime'] = ''
+			elif delta > 86400:
 #				d['deltastatetime'] = time.strftime("%d %H:%M:%S", time.gmtime(delta))
 				d['deltastatetime'] = "%0.1f days" % (delta / 86400.)
 			elif delta > 3600:
@@ -257,6 +264,8 @@ class Host:
 					state += " %5.1f" %  (self.connections[x].rtts[-1])
 				except:
 					state += " %5s" %  (self.connections[x].rtts[-1])
+		elif self.state in ["unknown", "UNKNOWN"]:
+			state = "" 
 		else:
 			state = "%s" % self.state
 		return state