6.1絡みですが嫌なレポートが

Problem Report amd64/99561 : system hangs in FreeBSD AMD64 when writting ext2fs
ttp://www.freebsd.org/cgi/query-pr.cgi?pr=amd64/99561

Problem Report kern/99588 : UFS2 filesystems hang when doing "fsck -B" or "dump -L" or "mksnapffs" in a moderated I/O filesystem with many file locks/unlocks
ttp://www.freebsd.org/cgi/query-pr.cgi?pr=kern/99588