Just an FYI, while in the past CSE 452 Distributed Systems was not on the core list represented on this page: http://www.cs.washington.edu/students/ugrad/core_courses/
It has recently been added. We will be contacting the folks in the Degree Audit course to add CSE 452 to the Core CSE list. If you are currently enrolled in 452, wait another week and then run an audit and it should show up in the right place.
CSE Advising