Hi. I gave Xenomai 2.6.0 a try and installed a newly patched kernel on my AT91SAM9G20 board. Here is my setup: proc: AT91SAM9G20 kernel: 2.6.35.9 OS: embedded Debian Squeeze The board boots fine up to stage 2 (user terminal). Sometimes, I am able to get a login terminal, despite seg fault messages. A similar behavior occurs in a Xenomai capable 2.6.37 kernel, only without the fault messages. In this case the board simply freezes. I included the files (.config and fault messages) in the attachments. Thanks.