My Windows Live Messenger and Windows Live Mail crash with no notice.  The screens just go black and I have to sign out on the menu bar or task bar.  The two programs will do it at the same time or alternating.  It never used to do that.  I have no idea where to look or why.  It there someone who can help me fix my problem?  What do I need to do?  Thank you for your help and co-operation in this matter.