Error on SQL server

Hello all i've just had this error on our SQL server:

Event:

Type: Error

Date: 24/05/2007

Category: Logon

User: N/A

Source: MSSQLSERVER

Computer: server name

Time: 12:24:53

In Work Hours: Yes

Security Category: Critical

Internal Event ID:

Scanned Computer: server name

Rule Name: SQL Server errors

Description ID: Length specified in network packet payload did not match number of bytes read; the connection has been closed. Please contact the vendor of the client library. [CLIENT: my i.p address]

Any ideas what it means?

Thanks in advance

Matt Smith

See this related http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=481967&SiteID=1 post here.