As promised, 5.0 SP1 W1 is available for download.
Versions W1 (WorldWide), DK (Danish), DE (German) and US are available at this moment.
These are the other release dates: Group 1 (GR1) countries are expected to release 7th May 2008
Group 2 (GR2) countries are expected to release 17th June 2008 - No UA (online help)
Group 2 (GR2) countries are expected to release 14th August 2008 - Incl. UA (online help)
It was down all weekend, so all the people (like me) that do all their downloading over the weekend had to catch up on Monday, so it was just under heavy load. It seems to be ticking along nicely now though.