I can see others have had this problem recently - what is the cause is the server down at the moment ? - I am based in the UK.
Hey GTMBlair
If you have a second, can you open up terminal, run these commands, and send me back your results?
ping dci.sophosupd.com
ping dc1.sophosupd.com
ping dc2.sophosupd.com
dig dig dci.sophosupd.com cname +short
Thanks,