I also have problems with softdep enabled panic: initiate_write_inodeblock and also panic in softdep_setup_freeblocks, called from ffs_truncate. (this in single user running 'ktrace foo' after 'ktrace fo' which was a typo, and the ktrace.out was in a softdep filesystem) Without softdeps the machine seems to run ok. This was a on a 1999-vintage Thinkpad 600E - decidedly a single processor machine, for what that's worth.