Mine exhibits the behavior described in the first post. It is very minimal and it does not especially bother me. It feels like any other manual transmission to me - it has been a long time, but I remember how they feel to drive. I find it really is only noticeable the first few minutes of driving. I also find if I put the transmission in 'sport' rather than drive, it is nearly non-existent as the revs seem stay a bit higher. So far, I tend to keep the car in 'sport' driving around town and then shift to drive for the highway or more open stretches of off-highway roads.
MK3 Focus = a lot of good ideas rather poorly executed.