Last night Apple has officially released iOS 5 in iTunes for all iDevice owners. The new version of the operating system brings more than 200 novelties and millions of iDevice owners rushed to download and install the new iOS 5 on their own terminal. This rush of users "flooded" the Apple servers with requests to download the operating system but also with requests for SHSHs so that if you try to restore or update you receive errors 3194, 3200, 3xxx, this device is not eligible for the requested build, etc.
Unfortunately, Apple did not expect so many users to want to install the new version of the operating system and its servers could barely cope with the millions of requests. Now things should have entered a normal phase and you should not receive any more errors during the restore process, but if you encounter them, it would be better to ignore them and try the restore again until it works.
