There were some admins recently, that installed a WSS and MOSS Hotfix (for example 12.0.6314.5000, 12.0.6315.5000, 12.0.6316.5000) and got an error message when running the Configuration Wizard (PSCONFIG):
In such a case you have to add two registry keys and restart the server:
1. HKLMSYSTEMCurrentControlSetControl -> add/modify DWORD value ServicesPipeTimeout to 60000 (60 seconds)
2. HKLMSYSTEMCurrentControlSetControl -> add/modify STRING value WaitToKillServiceTimeout to 120000 (120 seconds)
After the reboot, the service should start without problems, because it is set to automatic start.
Update: Eventually you have to start the service manually after the first boot.