This is again a not very convincing excuse: 1. Optification process was decided (or at least) publicized by Nokia in Sptember 2009. This is more than 8 months ago. Surely performance testing does not take that much. 2. Assessing the performance impact of placement of system files is a task that is easily parallelized. If it takes too long it is because Nokia chose to put too little people to work on this task.