This is a brilliant way to fix the issue.
Also there are two other blogs and a Microsoft thread about the same:
The trust relationship between this workstation and the primary domain failed
http://blogs.technet.com/b/asiasupp/archive/2007/01/18/typical-symptoms-when-secure-channel-is-broken.aspx
http://social.technet.microsoft.com/Forums/en-IE/winserverDS/thread/ab3920f7-3b43-4673-8124-85ee32daa4b6