I updated my 30GB iPod video recently to version 1.2.3 of the firmware when itunes said it was available... that all went fine, itunes reports that the ipod is running the new version.... but then it refused to sync to the ipod, stating that 'The iPod cannot be synced. An unknown error occurred (-48)' UNKNOWN ERROR?! I only recently moved from windows to leopard, and now already my mac seems to be turning into a windows machine with messages like that!!!! anyway... i tried the obvious, hard reset of ipod, and eventually got a different message... one telling me that the ipod was synced with another library, and not with the one on my machine.... which was just not the case... so i humoured it and told it to erase everything and re-sync with this library.. and after that all seemed rosy. I've just tried to sync it today, and again it's telling me it can't, 'unkown error'. Has this happened to anyone else after getting the latest firmware? I have not yet tried the 'restore' option for the ipod, I thought i'd see if anyone can shed any light first, but obviously that will be my next step if no-one else is having the same problem.