applied for 2006H1 then
upgraded for 2005 H1, no receipt. Mine was approved on 5/18. But I only knew this from the letter from VSC about 4 days later.
if you applied for 2005H1B, you should get a receipt. For primium petition, other people also got theirs approved on 5/18.
So I suspect for any case you should get urs approved on 5/18 too.
Anyway, it's required for you to get the results in two weeks. Now almost 3 weeks!
Better check again with VSC.