[GTALUG] Can't connect to ca.archive.ubuntu.com

[Jim Ruxton]

I am trying to update Ubuntu and all day I have been unable to connect 
to ca.archive.ubuntu.com (resolves to 91.189.88.152)   . I can't ping it 
either. I have no problems pinging us.archive.ubuntu.com . I assume the 
Canadian archive is down. Is there a simple way I can use apt-get with  
us.archive.ubuntu.com instead of ca.archive.ubuntu.com ?

Thanks,

Jim