freitasm: Tim, what others are saying is that the certificate does't work in all browsers because the chain is broken. Your browser might have the other certificates since you work for Vodafone (have you logged into work from this PC before? If so it's likely).
If I go to https://www.vodafone.co.nz/myvodafone on Firefox right now, from my laptop I still get the screen I posted before:
![]()
Home PC, I tried, Mozilla, Chrome, IE, Safari and opera.
Each had no issues. I tried some older version of firefox 22.0 and i got a security error only on that browser this morning.
I will ruffle the feathers of the website team soon.
Cheers