cannot load data from master automatically

[gilbert]

Hi all:
    Thanks to everybody that read and replied my first message.
    
	First, I have notice the bug in BIND, upgrade is in progress. But I don't believe that and released versions of BIND would have such a bug that made loading data from master automatically not working. There should be some mistakes in my configuration files.
   
   Every time I modify the db on master, I do remember increase the SOA serial number. And I use nslookup to make sure it has taken effect. ( If I forgot increase the SOA serial number, I guess the named-xfer would do nothing ).  
   I don't know how to determine if NOTIFY message had been sent or not. I don't see any message about NOTIFY in error log ( neither in slave server). It is just like that the feature didn't exist in BIND at all. ( I use "daemon.notice  /var/log/daemonlog" in syslog.conf. And if I made a syntax mistake, there would be error message in log file. so I think log file is ok and syntax is ok ) Manual transfer works well also indicates that the network is ok, and the slave can get the data if it wants to.
  The ip of master server in master{} was wrong for a time, I found it ( I thought I found the reason at that time ), so I corrected it. and kill -1 the named process. But nothing about the problem had changed. The problem is still there just like before.
 
  thanks for your patience.


Gilbert