event ID 861

should I worry about this?
Event Type: Failure Audit
Event Source: Security
Event Category: Detailed Tracking
Event ID: 861
Date: 08-01-28
Time: 09:46:30 P
User: NT AUTHORITY\SYSTEM
Computer: mypc
Description:
The Windows Firewall has detected an application listening for incoming
traffic.

Name: -
Path: C:\WINDOWS\system32\spoolsv.exe
Process identifier: 908
User account: SYSTEM
User domain: NT AUTHORITY
Service: Yes
RPC server: No
IP version: IPv4
IP protocol: UDP
Port number: 2719
Allowed: No
User notified: No

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
what can I do to stop this form happening and filling up teh security log?

the pc is connected to some hp netwrok printers and srvers