It is probably not a bug... most likely you have additional filesystems that need checking. If you are unsure about what filesystems to check, use the "-A" flag to fsck:
# fsck -A
That will check all applicable filesystems listed in your /etc/fstab file.
It is also possible that the filesystems are too severely damaged to be repaired from single user mode. In that case you'll need to download a Centos CD and use rescue mode and hope that you can recover.
-geoff
--------------------------------- Geoff Galitz Blankenheim NRW, Germany http://www.galitz.org/ http://german-way.com/blog/
Thank you for your reply . I have received my CentOS server as pre-installed , with no CD accompanied . Is there any other way to fix the bug?
Thank you