USB Pen is not working

If you plug it in and run:

sudo fdisk -l; lsb_release -a; uname -a; mount

What is output?

Greetings.
The output is:

Disk /dev/sda: 300.1 GB, 300090728448 bytes
255 heads, 63 sectors/track, 36483 cylinders, total 586114704 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0002fc7a

   Device Boot Start End Blocks Id System
/dev/sda1 * 63 586099394 293049666 c W95 FAT32 (LBA)

Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000daffb

   Device Boot Start End Blocks Id System
/dev/sdb1 63 955594394 477797166 83 Linux
/dev/sdb2 955594395 976768064 10586835 5 Extended
/dev/sdb5 955594458 976768064 10586803+ 82 Linux swap / Solaris
LSB Version: core-2.0-ia32:core-2.0-noarch:core-3.0-ia32:core-3.0-noarch:core-3.1-ia32:core-3.1-noarch:core-3.2-ia32:core-3.2-noarch:core-4.0-ia32:core-4.0-noarch:cxx-3.0-ia32:cxx-3.0-noarch:cxx-3.1-ia32:cxx-3.1-noarch:cxx-3.2-ia32:cxx-3.2-noarch:cxx-4.0-ia32:cxx-4.0-noarch:desktop-3.1-ia32:desktop-3.1-noarch:desktop-3.2-ia32:desktop-3.2-noarch:desktop-4.0-ia32:desktop-4.0-noarch:graphics-2.0-ia32:graphics-2.0-noarch:graphics-3.0-ia32:graphics-3.0-noarch:graphics-3.1-ia32:graphics-3.1-noarch:graphics-3.2-ia32:graphics-3.2-noarch:graphics-4.0-ia32:graphics-4.0-noarch:printing-3.2-ia32:printing-3.2-noarch:printing-4.0-ia32:printing-4.0-noarch:qt4-3.1-ia32:qt4-3.1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 12.04 LTS
Release: 12.04
Codename: precise
Linux jleite1 3.2.0-25-generic-pae #40-Ubuntu SMP Wed May 23 22:11:24 UTC 2012 i686 i686 i386 GNU/Linux
/dev/sdb1 on / type ext4 (rw,errors=remount-ro,user_xattr)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/jleite/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=jleite)

As far as I can see, there's no mention to the usb pen.

How big is the USB storage?

32gigabytes

Also how is this question related to skype?

It isn't. Why do you ask that?

Ubuntu “skype” package Questions Question #200299
Asked by Joaquim Leite 4 hours ago

Just that you associated the question with skype when you posted it, seemed weird.

What file system is the device?
When you last unplugged it, did you use the safetly remove device feature in the OS?

Not sure, most of the times I do, but sometimes I unplug the pen after the computer shuts down.
By the way, is there a option to directly asssociate the questions to other aspects of the operating system?

About the file system, I'm not sure too. It was created a few years ago and I don't remember now. Is there a way to know it now?
Perhapps it's irrelevant now, most certainly I'll have to format the pen if i manage to get the system to recognize it.

Any new ideas?

What file system is the device?
When you last removed it from a system, what steps did you take?

Please see entry #9 and #10.

If you shove it in another system, is it ok?