diff -Nur gamin-0.0.26.orig/libgamin/gam_api.c gamin-0.0.26/libgamin/gam_api.c
--- gamin-0.0.26.orig/libgamin/gam_api.c	2005-02-17 12:42:57.000000000 +0100
+++ gamin-0.0.26/libgamin/gam_api.c	2005-04-09 23:56:23.000000000 +0200
@@ -1300,7 +1300,6 @@
 int
 FAMCancelMonitor(FAMConnection * fc, const FAMRequest * fr)
 {
-    GAMDataPtr conn;
     int ret;
 
     if ((fc == NULL) || (fr == NULL)) {
@@ -1317,16 +1316,6 @@
     GAM_DEBUG(DEBUG_INFO, "FAMCancelMonitor(%d)\n", fr->reqnum);
 
     /*
-     * destroy the request internally
-     */
-    conn = fc->client;
-    ret = gamin_data_del_req(conn, fr->reqnum);
-    if (ret < 0) {
-        FAMErrno = FAM_ARG;
-        return (-1);
-    }
-
-    /*
      * send destruction message to the server
      */
     ret = gamin_send_request(GAM_REQ_CANCEL, fc->fd, NULL,
diff -Nur gamin-0.0.26.orig/libgamin/gam_data.c gamin-0.0.26/libgamin/gam_data.c
--- gamin-0.0.26.orig/libgamin/gam_data.c	2005-02-17 12:44:38.000000000 +0100
+++ gamin-0.0.26/libgamin/gam_data.c	2005-04-09 23:56:00.000000000 +0200
@@ -458,6 +458,12 @@
     event->code = evn->type;
     conn->evn_ready = 0;
     conn->evn_read -= evn->len;
+    if (event->code == FAMAcknowledge) {
+        /*
+         * destroy the request internally
+         */
+        gamin_data_del_req(conn, evn->seq);
+    }
     if (conn->evn_read > 0) {
         /*
          * there was other events piggy-backed on the same read,
diff -Nur gamin-0.0.26.orig/server/gam_connection.c gamin-0.0.26/server/gam_connection.c
--- gamin-0.0.26.orig/server/gam_connection.c	2005-02-17 11:11:26.000000000 +0100
+++ gamin-0.0.26/server/gam_connection.c	2005-04-09 23:56:00.000000000 +0200
@@ -327,7 +327,10 @@
             gam_subscription_set_listener(sub, conn->listener);
             gam_add_subscription(sub);
             break;
-        case GAM_REQ_CANCEL:
+        case GAM_REQ_CANCEL: {
+            char *path;
+            int pathlen;
+
             sub =
                 gam_listener_get_subscription_by_reqno(conn->listener,
                                             	       req->seq);
@@ -339,9 +342,17 @@
             }
             GAM_DEBUG(DEBUG_INFO, "Cancelling subscription for (%d)\n",
                       req->seq);
+            path = g_strdup(gam_subscription_get_path(sub));
+            pathlen = gam_subscription_pathlen(sub);
             gam_remove_subscription(sub);
             gam_listener_remove_subscription(conn->listener, sub);
-            break;
+
+            if (gam_send_ack(conn, req->seq, path, pathlen) < 0) {
+                GAM_DEBUG(DEBUG_INFO, "Failed to send ack to PID %d\n",
+                          gam_connection_get_pid(conn));
+            }
+            g_free(path);
+        }   break;
         case GAM_REQ_DEBUG:
 #ifdef GAMIN_DEBUG_API
 	    gam_debug_add(conn, &req->path[0], options);
@@ -543,7 +554,59 @@
         return (-1);
     }
     return (0);
+}
 
+/**
+ * gam_send_ack:
+ * @conn: the connection data
+ * @path: the file/directory path
+ *
+ * Emit an acknowledge event to the connection
+ *
+ * Returns 0 in case of success and -1 in case of failure
+ */
+int
+gam_send_ack(GamConnDataPtr conn, int reqno,
+             const char *path, int len)
+{
+    GAMPacket req;
+    size_t tlen;
+    int ret;
+
+    if ((conn == NULL) || (conn->fd < 0) || (path == NULL))
+        return (-1);
+
+    if (len <= 0) {
+        GAM_DEBUG(DEBUG_INFO, "Empty file path\n");
+        return (-1);
+    }
+
+    if (len >= MAXPATHLEN) {
+        GAM_DEBUG(DEBUG_INFO, "File path too long %s\n", path);
+        return (-1);
+    }
+
+    GAM_DEBUG(DEBUG_INFO, "Event to %d : %d, %d, %s\n", conn->pid,
+              reqno, FAMAcknowledge, path);
+    /*
+     * prepare the packet
+     */
+    tlen = GAM_PACKET_HEADER_LEN + len;
+    /* We use only local socket so no need for network byte order conversion */
+    req.len = (unsigned short) tlen;
+    req.version = GAM_PROTO_VERSION;
+    req.seq = reqno;
+    req.type = FAMAcknowledge;
+    req.pathlen = len;
+    memcpy(&req.path[0], path, len);
+    ret =
+        gam_client_conn_write(conn->source, conn->fd, (gpointer) & req,
+                              tlen);
+    if (!ret) {
+        GAM_DEBUG(DEBUG_INFO, "Failed to send event to %d\n", conn->pid);
+        return (-1);
+    }
+    return (0);
 }
 
 /************************************************************************
diff -Nur gamin-0.0.26.orig/server/gam_connection.h gamin-0.0.26/server/gam_connection.h
--- gamin-0.0.26.orig/server/gam_connection.h	2004-12-01 13:12:55.000000000 +0100
+++ gamin-0.0.26/server/gam_connection.h	2005-04-09 22:26:16.000000000 +0200
@@ -47,6 +47,10 @@
 					 int event,
 					 const char *path,
 					 int len);
+int		gam_send_ack		(GamConnDataPtr conn,
+					 int reqno,
+					 const char *path,
+					 int len);
 void		gam_connections_debug	(void);
 #ifdef __cplusplus
 }