some SQL are not caught in the query-slow.log

[tiger zhang]

when I turn on the slow_query_log_file ,and found lots of SQL is not caught in the file , as followed:
I want to know : how can I find the missed SQL( there is only commit).

the server version: mysql Ver 14.14 Distrib 5.1.32, for unknown-linux-gnu (x86_64) using readline 5.1
main parameters: binlog_format=mixed


thanks!

# Time: 130301 6:51:58
# User@Host: dingzhic[dingzhic] @ [192.168.1.106]
# Query_time: 1.768163 Lock_time: 0.000000 Rows_sent: 0 Rows_examined: 0
SET timestamp=1362091918;
commit;
# User@Host: dingzhic[dingzhic] @ [127.0.0.1]
# Query_time: 1.545211 Lock_time: 0.000039 Rows_sent: 0 Rows_examined: 0
SET timestamp=1362091918;
CALL loginUpdate2(582272,null,'192.168.1.125',0,'','',1);
# Time: 130301 6:54:37
# User@Host: dingzhic[dingzhic] @ [192.168.1.106]
# Query_time: 1.137814 Lock_time: 0.000000 Rows_sent: 0 Rows_examined: 0
SET timestamp=1362092077;
commit;