SharePoint has a nifty little feature which allows logged-in users to tell which other users are logged in (or away, or idle, etc.)  While this is a handy thing to have in an intranet setting, having your users prompted with the Name.dll download on a public web site isn’t desirable.  Here’s how to get rid of that pesky download prompt:

http://support.microsoft.com/kb/931509

Ever have SharePoint Designer tell you that something is checked out, but you know that it really isn’t? Here’s a link forwarded to me by a coworker:

 http://robgarrett.com/cs/blogs/software/archive/2007/12/14/sharepoint-designer-and-sharepoint-out-of-sync.aspx