SharePoint Unexpected Error with Correlation ID

There are many places in SharePoint where the descriptive error message: "An unexpected error has occured" shows up in the browser along with a Correlation ID.  Checked the server's event log shows nothing.  Not even an "unexpected error" message.

I found this Microsoft blog post about using the correlation id:
http://sharepoint.microsoft.com/Blogs/GetThePoint/Lists/Posts/Post.aspx?ID=353.  It's a complicated post, but if you're comfortable with Excel you might choose to use it.  A perhaps friendlier solution is to use the ULS Viewer available from MSDN and open the most current .log file at Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\LOGS\.  It provides right-click filtering.