cvsup sites are all at capacity?

I've tried various cvsup sites (normally cvsup2 or cvsup16  )
 and each site returns this message:

Rejected by server: Access limit exceeded; try again later

I've gotten that before but never with all of the hosts out there.  Is everyone and their brother doing a make world today,
 are the sites down for maintenance, or is something sinister
 going on?

Just wonderin'

Andrew Lankford