Fiasco vs Hazelnut

I certainly looked through the FAQs first before posting this question but did not find any clean distinction between both kernel versions. I was already told and could check myself that there are performance differences. Are these differences described anywhere in the website and I missed it? What are the major differences between these two? Cristiano. ------------------------------------------------------------ Cristiano Ligieri Pereira - http://www.ics.uci.edu/~cpereira