帮忙分析下FSCK的结果表现出来的问题

鹰仔

装了个SAMBA做文件服务器，最近发现容易自动重启，有时进入不是平常看到的有login提示的界面，按提示输入fsck后，再reboot才正常启动，fsck的结果如下所示，懂行的帮忙分析下问题所在。先谢谢。
BSD版本是7.0-RC1

# fsck

** /dev/ad0s1a (NO WRITE)
** Last Mounted on /
** Root file system
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
212844 files, 1296448 used, 3776766 free (93526 frags, 460405 blocks, 1.8% fragmentation)
** /dev/ad0s2d (NO WRITE)
** Last Mounted on /usr/lkk
** Phase 1 - Check Blocks and Sizes
INCORRECT BLOCK COUNT I=139 (268288 should be 268384)
CORRECT? no

INCORRECT BLOCK COUNT I=27556180 (1952 should be 0)
CORRECT? no

** Phase 2 - Check Pathnames
UNALLOCATED I=6382598 OWNER=root MODE=100644
SIZE=31 MTIME=Jun 22 16:22 2009
FILE=/lkk/DRAWING/2004/4013(鏉ㄥ眿閬?/110/4013-110-01.dwl

UNEXPECTED SOFT UPDATE INCONSISTENCY

REMOVE? no

** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
UNREF FILE I=139 OWNER=root MODE=100400
SIZE=238253483736 MTIME=Jun 22 16:22 2009
CLEAR? no

** Phase 5 - Check Cyl groups
SUMMARY INFORMATION BAD
SALVAGE? no

BLK(S) MISSING IN BIT MAPS
SALVAGE? no

FREE BLK COUNT(S) WRONG IN SUPERBLK
SALVAGE? no

80906 files, 49421436 used, 63251203 free (10907 frags, 7905037 blocks, 0.0% fragmentation)