Fail to start Integration Service

As part of Team Foundation Server the Integration Services are used. They are configured to start automatically but it doesn't. Status is "stopped". Trying to start the service manually fails too:

Event Type: Error
Event Source: Service Control Manager
Event Category: None
Event ID: 7000
Date: 07.11.2006
Time: 11:11:49
User: N/A
Computer: SDOSCARBUILDSRV
Description:
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.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

It uses default LogOnAs NT Authority\NetworkService. Any idea what might be wrong and what to do?

Thanks

Hans-Peter

Please check if this KB applies:
http://support.microsoft.com/kb/918644|||

SP1 has not been installed yet.

Hans-Peter

|||Is the Sql Server Service started? SSIS is dependent on that service.|||

Yes, the Sql Server Service is started. Also Agent, Analysis Service, Browser, Full Text Search, Reporting Services and VSS Writer. They all are started automatically and they are up.

Hans-Peter

|||

What to do? Any hints?

Hans-Peter