[Dbix-class] group_by woes

[Dan Horne]

> 
> The weird thing is that DBIC 0.07 came out 2 weeks ago and I too still
> have intermitent CPAN access to it. It seems that, somehow, some
> mirrors didn't catch it up - which is something rather weird.
> 
> -Nilson Santos F. Jr.
> 
I've had the same problem. Suddenly the DBIC0.07 search.cpan.org doco would
disappear, I'd wait 5 minutes and then it'd work again...