You install Microsoft Sharepoint 2010 RTM on Windows 2008 R2, you receive the following error message multiple times in the application event log:
Event Type: Error
Event Source: SharePoint Foundation
Event Category: None
Event ID: 7043
Computer: SERVERNAME
Description: Load control template file /_controltemplates/TaxonomyPicker.ascx failed: Could not load type 'Microsoft.SharePoint.Portal.WebControls.TaxonomyPicker' from assembly 'Microsoft.SharePoint.Portal, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c'.