Getting 'USB device not recognized' message when I never did before.

Hi there
I am constantly getting a USB device not recognized when I plug in my nano. I never got this before and as a result all it does is charge. It is not showing up in iTunes anymore so I cannot remove or dowload new songs on to my nano anymore. I have tried to go into control panel and the USB Hub device manager to deselect the power outage option but that did nothing. Please help! I seem to encounter trouble with any accessories Apple sell, whether they be earphones or USB cables.
Thanks

i'm getting the same problem too.
my ipod is nearly about 1 year old.
i use my ipod nano 2GB for music and as a flashdrive to store my uni work.
this morning accessing my files in the ipod on the computer was fine.
then later in the afternoon when i connected it into a computer i keep getting the msg 'usb device not recognised'. also itunes dont recognise my ipod either anymore.
i use Windows XP at home and uni.
i've tried my ipod on at least three different computers at uni and just tried at home.
same msg came up 'unknown device' from windows.
i've read the other posts in the forum and it mentioned about 5 R's and resetting it.
BUT the main problem is i DONT have any back up of my uni work and files and they are really really important so i CANT reset the ipod otherwise i will lose all the important things...my assignments, projects, photos...I was meant to make a back up b4 i start uni next monday but i guess now is TOO LATE.
I've noticed that the socket of the ipod dock conector to usb cable, that connects to the ipod is slightly split open.
Would this be causing the problem?
I am in Utter Despair and Desperation at the moment.
Can anyone help me PLEASE?
i would be sooooo grateful for your kind help and time.
kind regards,
a student who is on the verge of a breakdown due to this problem.
Windows XP Packard Bell

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