I started another computer to see if this had the error. This was last started the 21st of June.
From the event log I can see the computer is started at 08:48 am. While starting the usual Symantec stuff starts - i.e. SRTSP and LiveUpdate. LiveUpdate starts and stops a couple within 10 minutes or so.
At 09:21 am the first "delayed write failed" error pops up:
http://eventid.net/display.asp?eventid=50&source=ntfs
Followed by:
http://eventid.net/display.asp?eventid=57&source=ftdisk
I get about 10 messages of these 2 events the next 2 minutes.
I then get a DCOM error:
Unable to start a DCOM Server: {7E477741-01A6-4C06-9DAC-55F6174C08A3}. The error:"Insufficient system resources exist to complete the requested service. "Happened while starting this command:C:\Program Files\Symantec\Symantec Endpoint Protection\SescLU.exe -Embedding
Now the errors 50 and 57 continues to occur and I can only press OK to the popup. There's maybe 50 incidents or so. It then stops for about 2 hours and the repeats itself again.
In the Application log I can see this around the same time:
http://eventid.net/display.asp?eventid=1004&source=MsiInstaller
Detection of product '{FB8A4E30-9915-4814-ADF9-42E00D9FDC3D}', feature 'Core', component '{78451C05-F6C4-4B41-A80E-5F60B87C6E62}' failed. The resource 'C:\Programmer\Fælles filer\Symantec Shared\DefUtDCD.dll' does not exist.
Detection of product '{FB8A4E30-9915-4814-ADF9-42E00D9FDC3D}', feature 'Core' failed during request for component '{30466A58-8174-4ED4-9171-A4D739E84E3A}'
Detection of product '{FB8A4E30-9915-4814-ADF9-42E00D9FDC3D}', feature 'Core', component '{EA1EE0B5-8919-4935-A8F8-227891145D7A}' failed. The resource 'C:\Documents and Settings\All Users\Menuen Start\Programmer\Symantec Endpoint Protection\' does not exist.
It seems other have had the same issue:
https://www-secure.symantec.com/connect/forums/unable-start-dcom-server
Is it LiveUpdate that's the culprit?