I've fiddled around with this a lot, in an attempt to dualboot Meego and Maemo. Unsure where to send off an official bug report to the maintainer.

Regular uboot when the stock kernel is installed works well. Uboot kernel power edition consistently causes the phone to stop booting at the "Starting kernel" stage. I have tested this:

-power kernel installed, then regular uboot.
- power kernel installed, then uboot for power kernel
- uboot for power kernel (the one that includes power kernel 46).

Each time above requires a reflash to be able to boot Maemo. I've read of multiple users having the same problem.