Schannel errors on TMG 2010 / Server 2008R2

We get the dreaded Secure Channel (schannel) error below up to 20 times a day at random times. The server is running TMG 2010 on Server 2008 R2.
Some peiple seem to think that it is ok to ignore this channel as it simply indicates that an application couldn't access the internet securely to get updates.
If this is the case, is there an easy way to stop this from being logged? Apparently, there is a registry entry that stops schannel errors from being logged.


Log Name:      System
Source:        Schannel
Date:          28/01/2013 11:52:51
Event ID:      36888
Task Category: None
Level:         Error
Keywords:     
User:          SYSTEM
Computer:      TLMITMG.tlmint.org
Description:
The following fatal alert was generated: 10. The internal error state is 1203.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Schannel" Guid="{1F678132-5938-4686-9FDC-C8FF68F15C85}" />
    <EventID>36888</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2013-01-28T11:52:51.512755700Z" />
    <EventRecordID>119907</EventRecordID>
    <Correlation />
    <Execution ProcessID="540" ThreadID="2220" />
    <Channel>System</Channel>
    <Computer>TLMITMG.tlmint.org</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="AlertDesc">10</Data>
    <Data Name="ErrorState">1203</Data>
  </EventData>
</Event>

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Marco S