To display more that 50 items (which is the default) in a Table of Contents webpart, a few modifications need to be made to the web.config for your offending web application(s). Specifically, a new attribute is added to the predefined PortalSiteMapProvider keys. The new attribute is DynamicChildLimit. For example:
<add name="GlobalNavSiteMapProvider" description="CMS provider for Global navigation" type="Microsoft.SharePoint.Publishing.Navigation.PortalSiteMapProvider, Microsoft.SharePoint.Publishing, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" NavigationType="Global" EncodeOutput="true" DynamicChildLimit="0" /> <add name="CombinedNavSiteMapProvider" description="CMS provider for Combined navigation" type="Microsoft.SharePoint.Publishing.Navigation.PortalSiteMapProvider, Microsoft.SharePoint.Publishing, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" NavigationType="Combined" EncodeOutput="true" DynamicChildLimit="0" /> <add name="CurrentNavSiteMapProvider" description="CMS provider for Current navigation" type="Microsoft.SharePoint.Publishing.Navigation.PortalSiteMapProvider, Microsoft.SharePoint.Publishing, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" NavigationType="Current" EncodeOutput="true" DynamicChildLimit="0" /> <add name="CurrentNavSiteMapProviderNoEncode" description="CMS provider for Current navigation, no encoding of output" type="Microsoft.SharePoint.Publishing.Navigation.PortalSiteMapProvider, Microsoft.SharePoint.Publishing, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" NavigationType="Current" EncodeOutput="false" DynamicChildLimit="0" />
Note that this modification will need to be made to each server in your farm (if you are running in a farm configuration).
Worked a treat!!
Thanks
Marcus