This is another error that is happening 4-5 times a day.....What do I have to
do to fix it?

Log Name: System
Source: Microsoft-Windows-Windows Defender
Date: 3/3/2007 11:01:30 AM
Event ID: 3004
Task Category: None
Level: Warning
Keywords: Classic
User: N/A
Computer: Irv-PC
Description:
Windows Defender Real-Time Protection agent has detected changes. Microsoft
recommends you analyze the software that made these changes for potential
risks. You can use information about how these programs operate to choose
whether to allow them to run or remove them from your computer. Allow
changes only if you trust the program or the software publisher. Windows
Defender can't undo changes that you allow.
For more information please see the following:
Not Applicable
Scan ID: {1B1A7A33-A51C-47E1-BD80-5B1B7C6A778D}
User: Irv-PC\Irv
Name: Unknown
ID:
Severity ID:
Category ID:
Path Found: ieext:HKLM\Software\Microsoft\Internet
Explorer\Extensions\{724d43aa-0d85-11d4-9908-00400523e39a}
Alert Type: Unclassified software
Detection Type:
Event Xml:
Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"
System
Provider Name="Microsoft-Windows-Windows Defender"
Guid="{11CD958A-C507-4EF3-B3F2-5FD9DFBD2C78}" EventSourceName="WinDefend" /
EventID Qualifiers="0"3004/EventID
Version0/Version
Level3/Level
Task0/Task
Opcode0/Opcode
Keywords0x80000000000000/Keywords
TimeCreated SystemTime="2007-03-03T16:01:30.000Z" /
EventRecordID16785/EventRecordID
Correlation /
Execution ProcessID="0" ThreadID="0" /
ChannelSystem/Channel
ComputerIrv-PC/Computer
Security /
/System
EventData
Data Name="Product Name"%%827/Data
Data Name="Product Version"1.1.1505.0/Data
Data Name="Scan ID"{1B1A7A33-A51C-47E1-BD80-5B1B7C6A778D}/Data
Data Name="Unused"
/Data
Data Name="Unused"
/Data
Data Name="Unused"
/Data
Data Name="Unused"
/Data
Data Name="Domain"Irv-PC/Data
Data Name="User"Irv/Data
Data Name="SID"S-1-5-21-1903812106-2428839669-1432131728-1000/Data
Data Name="Threat Name"Unknown/Data
Data Name="Threat Id"
/Data
Data Name="Threat Severity"
/Data
Data Name="Threat Category"
/Data
Data Name="FWLink"%%832/Data
Data Name="Path Found"ieext:HKLM\Software\Microsoft\Internet
Explorer\Extensions\{724d43aa-0d85-11d4-9908-00400523e39a}/Data
Data Name="Threat Classification Index"0/Data
Data Name="Threat Classification"%%807/Data
Data Name="Unused"
/Data
Data Name="Unused"
/Data
Data Name="Detection Type Index"
/Data
Data Name="Detection Type"
/Data
/EventData
/Event