For those looking for totally stable GB for N1, I've tried a lot of ROMs and I'm currently running the following setup:
ROM: http://fitsnugly.euroskank.com/?rom=cm7&device=passion with IntersectRaven's kernel http://intersectraven.euroskank.com/kernels/Nexus One/22.214.171.124/20120112_14XX/
I'm heavy user (multiple BT devices connected, WiFi, GPS on at the same time) and this setup is perfectly working. No resets, no issues at all. I'm also using Mounts2SD (Apps, Dalvik and Cache on SD) and everything is working fine.
I installed this setup, and my wifi doesn't work. Getting the "Error" when I try to enable. Which, if memory serves, is a kernel error. Any other kernels I can flash?