每小时 40k 事件日志错误未知用户名或错误密码

我每小时得到大约 200k 的这些：

An account failed to log on.

Subject:    Security ID:        SYSTEM  Account Name:       TGSERVER$   Account
Domain:     WORKGROUP   Logon ID:       0x3e7

Logon Type:         4

Account For Which Logon Failed:     Security ID:        NULL SID    Account
Name:       administrator   Account Domain:     TGSERVER

Failure Information:    Failure Reason:     Unknown user name or bad
password.   Status:         0xc000006d  Sub Status:     0xc0000064

Process Information:    Caller Process ID:  0x334   Caller Process
Name:   C:\Windows\System32\svchost.exe

Network Information:    Workstation Name:   TGSERVER    Source Network
Address:    -   Source Port:        -

Detailed Authentication Information:    Logon Process:      Advapi
    Authentication Package: Negotiate   Transited Services: -   Package
Name (NTLM only):   -   Key Length:     0

This event is generated when a logon request fails. It is generated on
the computer where access was attempted.

The Subject fields indicate the account on the local system which
requested the logon. This is most commonly a service such as the
Server service, or a local process such as Winlogon.exe or
Services.exe.

The Logon Type field indicates the kind of logon that was requested.
The most common types are 2 (interactive) and 3 (network).

The Process Information fields indicate which account and process on
the system requested the logon.

The Network Information fields indicate where a remote logon request
originated. Workstation name is not always available and may be left
blank in some cases.

The authentication information fields provide detailed information
about this specific logon request.
    - Transited services indicate which intermediate services have participated in this logon request.
    - Package name indicates which sub-protocol was used among the NTLM protocols.
    - Key length indicates the length of the generated session key. This will be 0 if no session key was requested.

在我的服务器上...我将我的管理员用户名更改为其他名称，从那时起我就被这些消息弄糊涂了。

我在http://technet.microsoft.com/en-us/library/cc787567(v=WS.10).aspx上发现4 表示“批处理服务器使用批处理登录类型，其中进程可能代表执行没有他们的直接干预的用户。” 这对我来说真的没有任何意义。

我检查了服务，它们都作为本地系统或网络服务登录。管理员什么都没有。

任何人都知道我如何分辨这些来自哪里？我会假设这是一个正在崩溃的程序......

提前致谢！