After installed rollup 4 to Exchange Server 2007 all services can be disabled. You can see this errors:

Event Type: Error
Event Source: Service Control Manager
Event Category: None
Event ID: 7009
Date: 2008-11-10
Time: 11:56:10
User: N/A
Computer: EX1AW
Description:
Timeout (30000 milliseconds) waiting for the Microsoft Exchange Monitoring service to connect.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Event Type: Error
Event Source: Service Control Manager
Event Category: None
Event ID: 7000
Date: 2008-11-10
Time: 11:56:10
User: N/A
Computer: EX1AW
Description:
The Microsoft Exchange Monitoring 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.

This errors occur when Exchange Monitoring services cannot access the following Microsoft Web site: http://crl.microsoft.com/pki/crl/products/CSPCA.crl.