Windows 7 SP1 doing unexpected language pack operations, filling up CBS log

Hi,

I have an Asus Windows 7 SP1 Laptop.

I have noticed that the CBS log grows by about 20Gb a week, quickly filling the hard drive.

On closer inspection the CBS persist file timestamps match with log entires such as the one at the bottom of this post.

The log contains a lot of similar entries, with many different language pack codes.

The computer has no need of langauge packs other than UK English, so I have no idea what is triggering these events. Additionally, lpksetup only shows UK English as installed!

Richard

Log Name:      System
Source:        Microsoft-Windows-LanguagePackSetup
Date:          19/01/2015 10:46:06
Event ID:      1043
Task Category: Removing language pack
Level:         Error
Keywords:      
User:          SYSTEM
Computer:      PHIL-LAPTOP.dg.local
Description:
CBS failed to remove the language pack for zh-TW. Returned CBS error code 0x80073701.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-LanguagePackSetup" Guid="{7237FFF9-A08A-4804-9C79-4A8704B70B87}" />
    <EventID>1043</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>39</Task>
    <Opcode>49</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2015-01-19T10:46:06.890024700Z" />
    <EventRecordID>327513</EventRecordID>
    <Correlation />
    <Execution ProcessID="5340" ThreadID="6680" />
    <Channel>System</Channel>
    <Computer>PHIL-LAPTOP.dg.local</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="Language">zh-TW</Data>
    <Data Name="Error">0x80073701</Data>
  </EventData>
</Event>