1. Introduction
---------------
All results and input files are available at 

  http://www.slac.stanford.edu/xorg/hfag/semi/pdg06/pdg06.shtml

In the following (in no particular order),  the updates for PDG 2006 
with respect to PDG 2005 (web update) are discussed. In a number of cases we corrected bugs in the
input and param files used to compute the averages. In general the effects of those changes are minor.  

                   |  PDG 2005      |  PDG 2006
------------------------------------------------
BF(B0-> D l nu) %  |  2.12 +- 0.20  |  2.12 +- 0.20
BF(B0-> D* l nu) % |  5.34 +- 0.20  |  5.35 +- 0.20
BF(B->Xlnu) %      | 10.87 +- 0.17  | 10.78 +- 0.18  

|V(cb)|F(1)        |  37.6 +- 0.9   |  37.6 +- 0.8    
rho^2              |  1.56 +- 0.14  |  1.58 +- 0.14

|V(cb)|G(1)        |  42.2 +- 3.7   |  42.6 +- 4.5
rho^2              |  1.15 +- 0.16  |  1.17 +- 0.18


We include a table of  [B+ -> X l+nu] and [B0 -> X- l+ nu] branching fractions
separately. Currently we do not possess enough information of the older measurements
to enable us to compute the average at this time. We assume PDG will re-do their average
with the new Belle result included. 




2. Changes to common parameters
-------------------------------
We use the updated input  parameters for mixing and lifetimes from the
HFAG PDG 2006 update (common.param).