[Haskell] What dates are best for a hackathon in Gothenburg?

We are planning to hold the 4th Haskell Hackathon in Gothenburg in April. If you would be at all interested in coming, please indicate which of the three candidate dates Apr 4-6, Apr 11-13, or Apr 18-20 suit you by editing: http://www.haskell.org/haskellwiki/Hac_2008/Dates If you haven't been to a Haskell Hackathon before, check out the web page from the 3rd hackathon which was held in Freiburg in October: http://www.haskell.org/haskellwiki/Hac_2007_II /Björn