Server Error in '/adfs' Application

Ok , all of a sudden our SharePoint refused to render pages, I mean drop dead with this error.

 

We checked all the necessary culprits but no resolution. Our environment had just recently been Virtualized, which introduced a lot of unknowns into the equation.

After much digging around, come to fine out the time on our server were out of synch, go figure.
So, I hope this saves someone precious time out there.......:)