I am using the built in Safari browser for downloading the files and folders from internet and also I save them at the same location where I used to save previously from the time I am using my Macbook pro. But then, donít know for what reason from past one week all my donwloadd files are getting badly corrupted. No matter from which source I download the file they are bound to get corrupted. Even if I download any app software from Appleís official site, they get corrupted. If you are pointing out my MyBook Pro for the problem then I must say that you have completely mistaken because the same problem is being encountered in my another Mac system. I personally feel that there is something wrong with the network setup but unfortunately didnít get the exact place of issue. I would have called up my ISP but cant do it until I am sure that the issue is actually with the network and not with the both my Mac system or with the OS X Lion version update. Come on guys, let me know if thereís anyone having a MacBook pro or a Lion system and facing the same problem. I just want to make myself sure with the issue only then I can go for searching out for an appropriate soluiton.