Thousand of occurrence in the security log

My security log at my SBS2003 server fills up with thousand of occurrence every hour even thou if i turned off the logon/logoff. Ayone who can help me? I've had this problem for a while noe and my server go down because it genrated so many occurrence in the security log. I've tried to use Domain Security Controller to turn off the monotoring but my Security log still fills up.
Anyone can help?
scancomAsked:
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sk_raja_rajaCommented:
1.Large ammount of 538 and 540 events in your case indicates that users connect (or disconnect from) to your server's shares - nothing else. This event are rom Logon/Logoff audit policy which can be disabled. If I understand you correctly you should have Object access audit policy enabled. If your Security log is filling up with events to quickly, increase the log size or disable some of the auditing policies.

2.It may be that the machine has been elected as the master browser for that subnet.  Everytime someone makes a request for the browser list it would log an anonymous logon/logoff in the security log and browstat status will tell you who the master browser is
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