Per-segment faceting and soft commits

Using solr 4.0, I have 2 fields that I'm faceting on using facet.method=fcs. After the first facet query I can see the two fields in the fieldValueCache. If I then issue a soft commit at /update/json?softCommit=true and again look at the fieldValueCache the two entries are now gone. I was thinking

Why is "boost" not always listed in explain when debug is on?

using Solr Specification Version: 4.0.0.2011.08.09.11.02.13 While trying understand scoring I noticed that "boost" is intermittently displayed in the explain. For example, using edismax and the query string is "q=Starbucks&qf=name.search name^2" my first result has the boost explicitly listed in t