SP2007 web and database Schemas not consistent

1. in the app event log on my frontend web server I have the following:
Event Type: Error
Event Source: Windows SharePoint Services 3
Event Category: Topology
Event ID: 5617
Date:  1/24/2008
Time:  7:00:21 PM
User:  N/A
Computer: fewebserver
Description:
The schema version (3.0.150.0) of the database mysitedb_Content on DbServer is not consistent with the expected database schema version (3.0.149.0) on fewebserver.  Connections to this database from this server have been blocked to avoid data loss.  Upgrade the web front end or the content database to ensure that these versions match.



2. so I ran the sp products and technologies configuration wizard on the web server in an attempt to fix the error; kept the same db config settings. the wizrd failed to register sharepoint services. an exception of the type system.security.securityexception was thrown. additional exception information: access denied.

My user account on the web server is an admin.

Event Type: Error
Event Source: SharePoint Products and Technologies Configuration Wizard
Event Category: None
Event ID: 104
Date:  1/24/2008
Time:  8:25:02 PM
User:  N/A
Computer: fewebserver
Description:
Failed to register SharePoint services.
An exception of type System.Security.SecurityException was thrown.  Additional exception information: Access denied.
System.Security.SecurityException: Access denied.
   at Microsoft.SharePoint.Administration.SPPersistedObject.Update()
   at Microsoft.SharePoint.Administration.SPService.Update()
   at Microsoft.SharePoint.Administration.SPPersistedObject.Update(Boolean ensure)
   at Microsoft.SharePoint.PostSetupConfiguration.ServicesTask.InstallServiceInConfigDB(Boolean provisionTheServiceToo, String serviceRegistryKeyName)
   at Microsoft.SharePoint.PostSetupConfiguration.ServicesTask.InstallServices(Boolean provisionTheServicesToo)
   at Microsoft.SharePoint.PostSetupConfiguration.ServicesTask.Run()
   at Microsoft.SharePoint.PostSetupConfiguration.TaskThread.ExecuteTask()
The Zone of the assembly that failed was: MyComputer


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