Terminal Services Problem in XP Pro

Hi,

I have a XP pro running nicely untill one day when the Terminal
Service stopped automatically (I still can use my computer, it just
that all the services that depend on Termonal service does not work
like Fast user switching and Remote desktop). I know this does sounds
strange.

Actually when I try to run the service from 'Services', I get the
following message:

"The Terminal Service on Local Computer started and then stopped. Some
services stop automatically if they have no work to do, for example,
the Performance Logs and Alerts Service."

I checked the 'remote desktop'. The option is already on.

I am not sure why it says that. If anybody has any suggestions or
encountered a similar problem, I would really appreciate if you can
share it with me.

Thanks,
Anubhav