After updating 12.04, my HDD partitions and USB storage devices was removed from the devices list on Nautilus Sidebar, only the "floppy0" is there.

I can see all of them with Disk Utility. I can mount them and add them to computer list on Nautilus (not to device list).
I can't see any device in /media, only "floppy", "floppy0" and "cdrom" folders.
fstab file:
> # /etc/fstab: static file system information.
> #
> # Use 'blkid' to print the universally unique identifier for a
> # device; this may be used with UUID= as a more robust way to name devices
> # that works even if disks are added and removed. See fstab(5).
> #
> # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0
> # / was on /dev/sda3 during installation UUID=ec9a8bbb-4cf0-4599-bf0e-85f7e3de6302 / ext4
> errors=remount-ro 0 1
> # swap was on /dev/sda6 during installation UUID=88002a18-0f7f-4e7a-87b7-ef8e9f6388c8 none swap sw
> 0 0 /dev/fd0 /media/floppy0 auto
> rw,user,noauto,exec,utf8 0 0