Q: My apple-based e-mail stopping working on May 22-- it keeps asking for passwords -- which are not accepted.  What is going on?  I am on snow leopard 10.6.8-- I can only get e-mail on my phone!!

I am unable to sign in on e-mail (mobile me OR me.com)-- It just randomly stopped on May 22nd.  Nothing will update from that date.  My password comes up as invalid; I have tried to re-set but it still comes up as invalid.  What is going on???  This is so unlike apple.