I am unable to mount any fat32 or fat16 formatted usb disks under Ubuntu 13.10.
The thing here to note is that it is happening only with fat formatted Disks. ntfs, ext formatted external usb disks work well
(I tried formatting the same with ext4 and it worked)

While mounting via nautilus:

Error while mounting from terminal:

root@shubham-pc:~# mount -t vfat /dev/sdc1 /media/shubham/n

mount: wrong fs type, bad option, bad superblock on /dev/sdc1,

       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try

       dmesg | tail  or so

As suggested by the error:
Output from dmesg | tail

root@shubham-pc:~# dmesg | tail

[ 3545.482598] scsi8 : usb-storage 1-1:1.0

[ 3546.481530] scsi 8:0:0:0: Direct-Access     SanDisk  Cruzer           1.26 PQ: 0 ANSI: 5

[ 3546.482373] sd 8:0:0:0: Attached scsi generic sg3 type 0

[ 3546.483758] sd 8:0:0:0: [sdc] 15633408 512-byte logical blocks: (8.00 GB/7.45 GiB)

[ 3546.485254] sd 8:0:0:0: [sdc] Write Protect is off

[ 3546.485262] sd 8:0:0:0: [sdc] Mode Sense: 43 00 00 00

[ 3546.488314] sd 8:0:0:0: [sdc] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA

[ 3546.499820]  sdc: sdc1

[ 3546.503388] sd 8:0:0:0: [sdc] Attached SCSI removable disk

[ 3547.273396] FAT-fs (sdc1): IO charset iso8859-1 not found

Output from fsck.vfat:

root@shubham-pc:~# fsck.vfat /dev/sdc1

dosfsck 3.0.16, 01 Mar 2013, FAT32, LFN

/dev/sdc1: 1 files, 1/1949978 clusters

All normal

Tried re-creating the whole partition table and then formatting as fat32 but to no avail so the possibility of corrupted drive is ruled out.
Tried the same with around 4 Disks or so and all have the same things