I was wondering regarding similar issues, not a complaint but just discussing about it. I've chance to download the updates through Wifi only spots and sometimes the connection gets lost and WUD hungs, no problem I restart the program but WUD still keeps track of the latest partially (corrupted) downloaded file, so what I do is I download it again to be safe. The problem arises because if I choose to download multiple files and Wifi connection gets lost then you can understand I don't know which downloaded file is safe or not so I must download updates one by one to avoid problems. Isostick in very interesting for portability and usability but very very expensive (add memory cards cost too) and not safe in my opinion. A burned disc cannot be corrupted by a virus attack but a volatile memory support can. Many thanks to WUD developer for giving us this beautiful program.