How to change the navigation depth of the top menu in MOSS2007

The default top navigation menu shows the mavigation structure in two levels, the first level are tabs and the second level is a dropdown menu.

It is possible to change the maximum depth of these menus. To change this default setting, do the following:
The setting can be changed by changing MaximumDynamicDisplayLevels iten in the SharePoint:AspMenu tag of the master page.

- Open the default.master page at [drive]:\Program Files\Common Files\Microsoft Shared\web server extensions\12\TEMPLATE\GLOBAL
- Search for "TopNavigationMenu" in the file.
- Change the property MaximumDynamicDisplayLevels to the value which you like.
- Save the file and you're done.

[SPS2003] Requesting userdetails from list item

When a user adds a new item to a list, for example an Announcement, the name of the users is registered aswell. If these items are shown on a page using a webpart, like the default Announcements on a team site, the username is shown also. It is possible to click the name of the user to request more user details.

On an environment of a customer, a "Page cannot be displayed" error message is displayed when clicking this item. After some troubleshooting and reading through the IIS log, the cause of this issue is the following:
The link of the page that displays the user details is http://<servername>/sites/<sitename>/_layouts/1033/UserDisp.aspx?ID=<id>. This aspx file requests the aspx PortalAPI.aspx. The PortalAPI request the "Up To Link" URL and tries to contact the configured portal. In our case it turned out that users configured the Up To Link to a team site instead of the portal. Therefore the PortalAPI tries to generate a non existing URL, causing the Page cannot be displayed error.

So if you run into the same issue: First check if the Up To Link is really a portal!!