Is anyone else having problems when first accessing sites protected by Incapsula on Vodafone cable (or even DSL if you can test)?

Two sites are www.bnz.co.nz and www.gcsb.govt.nz. 

When I first try loading BNZ it may take up to a minute to start loading. Since the connection to BNZ is over SSL then I am not sure the proxy would be to blame - perhaps some connection problems to Incapsula servers?

I tried the GCSB because it's another one I know in New Zealand using Incapsula.

Anyone from Vodafone could check please?