accessing Windows

I upgraded the kernel on Feisty.
Now I can't access Windows partitions. Previously I could.

fstab is not changed. It is the same as fstab_backup.

mtab gets changed. It is not the same as the mtab_backup.
When I copy mtab_backup to mtab and type sudo mount -a, that doesn't work.
When I reboot mtab gets changed again.

How can I access Windows partitions?

This is my mtab_backup.
[quote]
/dev/sdb1 / ext3 rw,errors=remount-ro 0 0
proc /proc proc rw,noexec,nosuid,nodev 0 0
/sys /sys sysfs rw,noexec,nosuid,nodev 0 0
varrun /var/run tmpfs rw,noexec,nosuid,nodev,mode=0755 0 0
varlock /var/lock tmpfs rw,noexec,nosuid,nodev,mode=1777 0 0
procbususb /proc/bus/usb usbfs rw 0 0
udev /dev tmpfs rw,mode=0755 0 0
devshm /dev/shm tmpfs rw 0 0
devpts /dev/pts devpts rw,gid=5,mode=620 0 0
lrm /lib/modules/2.6.20-15-generic/volatile tmpfs rw 0 0
/dev/sda6 /media/win-info vfat rw,umask=0000 0 0
/dev/sda7 /media/win-eu vfat rw,umask=0000 0 0
/dev/sda5 /media/win-games vfat rw,umask=0000 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0
/dev/sdc6 /media/disk ext3 rw,noexec,nosuid,nodev 0 0
/dev/sdc1 /media/disk-1 ext3 rw,noexec,nosuid,nodev 0 0
/dev/sdc5 /media/disk-2 ext3 rw,noexec,nosuid,nodev 0 0
[end quote]

On reboot, the 3 media/win lines are taken out. Why? I want them in.