Unrecognized section in web.config file

Ran into this error while provisioning SSP. Blew away the whole SSP and all web application associated with it. Created a new web app and a new SSP but browsing the page was showing errors " an unexpected error has occured". Checking the event viewer showed an unrecognised section in the web.config at drive\program files\microsoft office servers\web services\root. Took a back up and deleted this section. The SSP came up fine after that an everything was a breeze.