When you made your web.config changes did you copy the machine keys from the original to the new web.config?

Here is a copy of my original web.config file.  I don't see anything about machinekey in here......

<configuration>

    <!-- register local configuration handlers -->
    <configSections>
        <sectionGroup name="dotnetnuke">
            <section name="data" type="DotNetNuke.ProviderConfigurationHandler, DotNetNuke" />
            <section name="logging" type="DotNetNuke.ProviderConfigurationHandler, DotNetNuke" />
            <section name="scheduling" type="DotNetNuke.ProviderConfigurationHandler, DotNetNuke" />
            <section name="htmlEditor" type="DotNetNuke.ProviderConfigurationHandler, DotNetNuke" />
        </sectionGroup>
    </configSections>

    <!-- Sql Server connection string for support of pre DNN 2.0 Private Assemblies
         The new connection string (for DNN 2.0) is in the section dotnetnuke (providers) -->
    <appSettings>
        <add key="connectionString" value="Server=xxxxxxx;Database=xxxxxxxx;uid=xxxxxxx;pwd=xxxxxxx;" />
    </appSettings>

    <system.web>

        <!-- set debugmode to false for running application -->
        <compilation debug="false" />

        <!-- permits errors to be displayed for remote clients -->
        <customErrors mode="RemoteOnly" />

        <!-- forms or Windows authentication -->
        <authentication mode="forms">
        <forms name=".DOTNETNUKE" protection="All" timeout="60" />
        </authentication>
        <!--
            <identity impersonate="true"/>
            <authentication mode="Windows">
            </authentication>
        -->

        <!-- allow large file uploads -->
        <httpRuntime useFullyQualifiedRedirectUrl="true" maxRequestLength="8192" />
        
        <!--  GLOBALIZATION
        This section sets the globalization settings of the application.
        Utf-8 is not supported on Netscape 4.x
        If you need netscape compatiblity leave iso-8859-1.
        UTF-8 is recommended for complex languages
        -->
        <globalization culture="en-US" uiCulture="en" requestEncoding="UTF-8" responseEncoding="UTF-8" fileEncoding="UTF-8" />
        <!--<globalization culture="en-US" uiCulture="en"  fileEncoding="iso-8859-1" requestEncoding="iso-8859-1" responseEncoding="iso-8859-1"/>-->

        <!-- page level options -->
        <pages validateRequest="false" enablev13wstat3Mac="true" />

    </system.web>

    <dotnetnuke>
        <htmlEditor defaultProvider="FtbHtmlEditorProvider" >
            <providers>
                <clear/>
                <add name = "FtbHtmlEditorProvider"
                        type = "DotNetNuke.HtmlEditor.FtbHtmlEditorProvider, DotNetNuke.FtbHtmlEditorProvider"                    
                        providerPath = "~\Providers\HtmlEditorProviders\FtbHtmlEditorProvider\"
                />
            </providers>
        </htmlEditor>
        <data defaultProvider="SqlDataProvider" >
            <providers>
                <clear/>
                <add name = "SqlDataProvider"
                        type = "DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider"
                        connectionString = "Server=xxxxxx;Database=xxxxxxx;uid=xxxxxxx;pwd=xxxxxxx;"
                        providerPath = "~\Providers\DataProviders\SqlDataProvider\"
                        objectQualifier = ""
                        databaseOwner = "dbo"
                        upgradeConnectionString = ""
                />
                <add name = "AccessDataProvider"
                        type = "DotNetNuke.Data.AccessDataProvider, DotNetNuke.AccessDataProvider"
                        connectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;"
                        providerPath = "~\Providers\DataProviders\AccessDataProvider\"
                        objectQualifier = "DotNetNuke"
                        databaseFilename = "DotNetNuke.mdb.resources"
        />
            </providers>
        </data>
        <logging defaultProvider="XMLLoggingProvider" >
            <providers>
                <clear/>
                <add name = "XMLLoggingProvider"
                        type = "DotNetNuke.Logging.XMLLoggingProvider, DotNetNuke.XMLLoggingProvider"
                        configfilename="LogConfig.xml.resources"
                        providerPath = "~\Providers\LoggingProviders\XMLLoggingProvider\"
                />
            </providers>
        </logging>
        <scheduling defaultProvider="DNNScheduler" >
            <providers>
                <clear/>
                <add name = "DNNScheduler"
                        type = "DotNetNuke.Scheduling.DNNScheduler, DotNetNuke.DNNScheduler"
                        providerPath = "~\Providers\SchedulingProviders\DNNScheduler\"
                        debug="false"
                        maxThreads="-1"
                        enabled="true"
                />
            </providers>
        </scheduling>

    </dotnetnuke>
</configuration>

Any suggestions?