Index: funcs/func_md5.c
===================================================================
--- funcs/func_md5.c	(revision 8874)
+++ funcs/func_md5.c	(working copy)
@@ -57,11 +57,13 @@
 {
 	char newmd5[33];
 	char *parse;
+	static int deprecated = 0;
 	AST_DECLARE_APP_ARGS(args,
 		AST_APP_ARG(digest);
 		AST_APP_ARG(data);
 	);
 
+
 	if (ast_strlen_zero(data)) {
 		ast_log(LOG_WARNING, "Syntax: CHECK_MD5(<digest>,<data>) - missing argument!\n");
 		return NULL;
@@ -77,6 +79,12 @@
 		return NULL;
 	}
 
+	if (!deprecated) {
+		deprecated = 1;
+		ast_log(LOG_WARNING, "CHECK_MD5() is deprecated in Asterisk 1.4 or later.\n");
+        }
+
+
 	ast_md5_hash(newmd5, args.data);
 
 	if (!strcasecmp(newmd5, args.digest) )	/* they match */