[Asterisk-Users] asterisk 1.2.1 realtime mysql.4.1.xx report errors

[hoowa sun]

i am using asterisk1.2.1 realtime mysql4.1.x

i found same update error in debug mode

i cat /var/log/asterisk/debug follow:
Dec 13 00:12:28 DEBUG[7533] db.c: Unable to find key '99015' in family
'SIP/Registry'
Dec 13 00:12:28 DEBUG[7533] res_config_mysql.c: MySQL RealTime: Update SQL:
UPDATE sip_user SET ipaddr = '', port = 'Ð'ê·¬'ê·qœ¥', regseconds = '0',
username = '99015' WHERE name = '99015'
Dec 13 00:12:28 DEBUG[7533] res_config_mysql.c: MySQL RealTime: Query:
UPDATE sip_user SET ipaddr = '', port = 'Ð'ê·¬'ê·qœ¥', regseconds = '0',
username = '99015' WHERE name = '99015'
Dec 13 00:12:28 DEBUG[7533] res_config_mysql.c: MySQL RealTime: Query Failed
because: You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use near
'ê·¬'ê·qœ¥', regseconds = '0', username = '99015' WHERE name = '99015'' at
line 1
Dec 13 00:12:28 DEBUG[7529] res_config_mysql.c: MySQL RealTime: Retrieve
SQL: SELECT * FROM sip_user WHERE name = '99015'
Dec 13 00:12:28 DEBUG[7529] db.c: Unable to find key '99015' in family
'SIP/Registry'

this UPDATE statements often get error messages.
are those bug???
how are influence on my services?

thanks
hoowa sun
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