I just rooted my droid, no problems, everything went smooth. Then I tried to install 3 different "Kernels".
1 from here
2 from here
[UPDATE] New Kernels - Low Voltage + Medium Voltage - 3/25/2010
All seemed to install fine, but when i go to reboot, my phone is stuck with the motorola "M" logo. It might reboot once or twice, but never passes the M.