SSIS Windows Service Failing

I encountered this issue with the SSIS windows service failing.
It was generating these errors at each attempt to run the service.


The SQL Server Integration Services service failed to start due to the following error:
The service did not respond to the start or control request in a timely fashion.

....

A timeout was reached (30000 milliseconds) while waiting for the SQL Server Integration Services service to connect.


Log Name:      Application
Source:        Microsoft-Windows-User Profiles Service

Event ID:      1530
Task Category: None
Level:         Warning
Keywords:      Classic

Description:
Windows detected your registry file is still in use by other applications or services. The file will be unloaded now. The applications or services that hold your registry file may not function properly afterwards. 




There were several possible reasons suggested here
http://connect.microsoft.com/SQLServer/feedback/details/125768/sql-server-integration-services-service-failed-to-start-after-installing-sp1

but for this case it was resolved by adding this new entry in the config files mentioned here http://support.microsoft.com/kb/918644 Method 1

    <runtime>       
    <generatePublisherEvidence enabled="false"/>   
    </runtime>

C:\Program Files\Microsoft SQL Server\90\DTS\Binn\
    msdtssrvr.exe.config
    DTExec.exe.config
    Dtshost.exe.config
    DtsDebugHost.exe.config
    DTUtil.exe.config