Service gives error 1053 on Windows Vista.

I have a service which runs on local system account and runs fine on
Win Xp, but when i run the same service on Vista it refuses to start.
I get the error " service failed to start due to the following error:
The service did not respond to the start or control request in a
timely fashion." .I tried googling for possible solutions but
solutions like clearing the Event log did not help.The service is not
written using .NET framework.

Any input would be helpful.

Thanks,
Moulik S.