Corrupted iPod?

I am receiving the following error when I try to sync my iPod.
“iTunes has detected an iPod that appears to be corrupted. You may need to restore this iPod before it can be used with iTunes. You may also try disconnecting and reconnecting the iPod”

I already tried resetting and restoring my iPod. I don’t know what to do!

Xema, you are definately the man of the moment. Since they were dredging the local river and happened to come across my old Click Wheel iPod I thought I’d give your diagnostics a try. It couldn’t ressurect my iPod but it really got me going since a lot of the tests were there. So I had a look at a site where this guy recommends taking a screwdriver to the thing and shoving in a slice of a beer coaster or a business card to force the hard drive not to wander off course. Didn’t work the first time, and the screwdriver was hacking it up a bit, so I took to it with a paint scraper, which worked really well. I inserted a folded up business card against the HDD and also scrunged up the connecting leads to make sure they didn’t wander around. And voila, it came alive. Now to quickly back up the songs — that Steve Jobs doesn’t want us to back up — **&%###**=@ — So I tried my old copy of EphPod, which kind of worked but the Ipod control folder was messing with it. So I dowloaded the lastest EphPod 2.77, which worked like a beauty. Then back to iTunes, which updated the Ipod software to 3.1.1. or whatever it was. And in no time I was rocking around the lounge room to Bowie again, like a teenager.
Mystified though! Couldn’t find the beer coaster/ business card fix anywhere on the Apple site??????

Go to this page
http://www.tongfamily.com/apple/ipod/ipod_diagnostics_and.php
And perform the following tests
* Diagnostic screen: Reset the iPod and when the Apple logo shows, press the Select and Back buttons
o HARD R/W Read and write hard drive test. Reads HDD pass if all goes well.
o SMRT DAT Another hard drive test. Reads RETRACTS 4 REALLOCS 0 PENDING 0.
o SMRT SCAN Appears to be akin to a regular iPod’s Disk Scan test. This takes several minutes so don’t perform this test unless the iPod is plugged into a power source.
o DRV TEMP Displays drive temperature.
Do this before taking it to the service or droping it into the trash can.