Boot problem: Hang up on synchronising system clock to hardware clock

["rec.sea@btopenworld.com" <rec.sea@btopenworld.com>]

On a machine we recently installed (testing) we have this problem at boot

Hang up on synchronising system clock to hardware clock

Then if you Ctrl + C the boot procedure goes ahead. It stops again with the 
same message. If you Ctrl + C again, the boot procedure goes ahead 
successfully and completes.

Any solution?

Thanks in advance.