Assuming your JB'en, go to google and download WinSCP.
-Go into your iPod's network selection screen, click on the network your using, and look at the screen that opened up, and you should see your iPod's IP andress. Remember it.
-Go into WinSCP, and you should see a screen asking for your iPods login info.
-IP is, well your iPods IP
-Leave the port number at 22
-Username is root
-Password is alpine
-Change the file protocal to SCP
-Press save, so you don't have to do all this again.
-Now that you can get into WinSCP, you change alot of stuff manually, like icons and stuff.
-Anyways, open up WinSCP's terminal. (Sorry, I'm doing this off of memory, but I think you press Ctrl+T.
-Type chown -R mobile:mobile /var/mobile into the terminal box an d press enter. It's not gonna tell you when its done, so just wait like 5 seconds, than close it.
-Now, go into you iPod's safari, and re-log into stuff.
There you go!