XNA
I am still not sure attend or not to attend. The skill to build a game in 48h. is something special, some training could not harm.
If i attend i’ll use xna, but how should i pack the game? User needs xna redist and .net framework, so xna is defenitiv not the best choice for LD. But i can not learn SDL in 3 days so good, to make a game in 48h. So swiching a programming language is a bad idea.
Otherwise i loose nothing 
I think i should see some xna-LD-games, how they deal with this problem?
I think there is one more way to pack XNA game:
– if user have .NET, but don’t have xna redist, it could be enough just to add some DLLs from redist into game zip. But i think it’s actually prohibited by license.