I also failed 70-458 last week, passing the admin section but failing the SSIS section (which is a greater challenge to me because I've had little need to use SSIS in my job).

I was disapointed with the feedback printout I was given. In the non-upgrade exams, you get a bar graph on each general topic covered so you can see the areas where you need the most improvement. On this exam, there was one graph for Admin and one graph for SSIS. I wish it was was a little more granular.