Well, it is ok for me now.

I did following:

• Clear internet cache (files and cookies): no immediate success
• Reset my ADSL router and reboot PC (reset dhcp Windoz style): success!

Probably something got stuck, I cannot really pin-point where... but it's likely to be on my side and not DAZ, uh-oh :). BTW DAZ showed attention to my mail, thanks Allen!

Thanks, igohigh, for the advice about the cache.
EricofSD, try resetting cache and check if your DNS is setup ok, hope it works