The problem here is that the apt-xapian-index information is copied from the livecd. This is fixed now in ubiquity, it will not copy this over. This means that synaptic will build the index on first run.
The problem here is that the apt-xapian-index information is copied from the livecd. This is fixed now in ubiquity, it will not copy this over. This means that synaptic will build the index on first run.