If ios 5 takes too long to download try this

[Alig]

So if you have trouble with the download, sync your iphone before doing anything. Then hit the restore button. While this is happening and restoring it will automatically install the new ios 5 and then once complete it will ask you to choose how to set up your iphone. Choose the one that you just did your sync with and it will load everything back on. It should be quicker but depends on how much you have to load on. This worked for me when i had trouble downloading ios 4. I dont know if you want to do it this way. I guess it could be a bit of a risk but hopefully it would work with this version as well. I dont see why it shouldnt