Log fil på server 2003 viser flere hundrede Logon failure. ?????

Event Type:    Failure Audit
Event Source:    Security
Event Category:    Logon/Logoff
Event ID:    529
Date:        13-11-2012
Time:        14:24:50
User:        NT AUTHORITY\SYSTEM
Computer:    SERVER1
Description:
Logon Failure:
    Reason:        Unknown user name or bad password
    User Name:    anna
    Domain:        XXXXXXX
    Logon Type:    10
    Logon Process:    User32 
    Authentication Package:    Negotiate
    Workstation Name:    SERVER1
    Caller User Name:    SERVER1$
    Caller Domain:    XXXXXXX
    Caller Logon ID:    (0x0,0x3E7)
    Caller Process ID:    7600
    Transited Services:    -
    Source Network Address:    31.214.145.127
    Source Port:    4133


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