I have a 4G ipod touch, which was on ios4. I had problems updating the OS whilst my PC was on WinXP. Now my PC is on Win7, I have updated to ios6. But on the touch and in itunes I only have the apps that were on the ipod at time of transfer. Games I paid for but removed from my ipod to make space, or a couple I couldn't put on the ipod until I had updated ios are nowhere to be found. Do I have re-buy those games? Thanks.
You can re-download them for free, check the "Purchased" tab to see everything you've bought (if it doesn't crash). Just make sure the apps say "Install" and not the price, then you can be sure you've already paid for it. Oh, and make sure you're signed into the same account as before, of course.
