How long is forever....? Because I flashed my "new dialer" onto my phone, and watched it reboot (with that lovely nexus one bootscreen) for a GOOD 5+ minutes (maybe a good 7 mins or so) which is waaaaay too long for a boot.
However, it finally got to the home screen!!!! I don't know WHY it took that long....but I'm super glad I was busy with my hands all wet doing dishes, while I watched it on the table next to me. Otherwise (had I not had wet hands) I would have pulled the battery, and reflashed Fresh 1.1 all over again.
Not sure why it won't work for you. Others I have given this link to, have had success both with 1.6 and 1.5 OS.....I currently have this on my phone and I am running 1.5 with Fresh 1.1/Gumbo Kernal
The order I did all my flashing was...fresh, gumbo, set CPU, nexus one boot, then nexus one launcher.....and you can only see the nexus one launcher in the HOME setting, and not Sense.
MAYBE you should try doing one at a time.....reboot after each flash???
Keep us posted if you are still keeping at it!!!