[Serusers] Weird syslog messages

I see these every now and then... Jan 10 20:22:35 build ser[14278]: authorize(): Invalid nonce value received, very suspicious ! Jan 10 20:22:53 build ser[14278]: is_user(): No authorized credentials found (error in scripts) Jan 10 20:23:28 build ser[14278]: is_user(): No authorized credentials found (error in scripts) Jan 10 20:40:45 build ser[14272]: db_close(): Invalid parameter value Jan 10 20:40:56 build ser[14419]: authorize(): Invalid nonce value received, very suspicious ! Jan 10 20:41:09 build ser[14421]: WARNING: sip_msg_cloner: header body ignored: 4096 I think it is when I stop and start the server manually. Should I be worried? Is there a more graceful way of restarting? ---greg