I have my system (EWF/HORM) working fine. I recently put it on CF and my boot times on hibernation and cold boot have increased significantly from 20 sec to 28 sec (hib) and 25 to 37 (!!!) sec on cold boot.
Could it be that I added a not EWF'd HDD to store mp3? Not probably but who knows..
Im using an 1Gb Ultra II and a IDE2CF adaptor.