I'm trying to update my ipad to the new op system 5.1.1. Current o.s. is 4.whatever. My laptop is a 5 year old Dell Vostro 1000 with Windows XP and Kaspersky security. When I plug in the ipad and go to itunes, I can sync just fine. When I then try to update to the new o.s., the process starts for a few minutes, then I get the message "unable to backup files." I've tried with security on and with it off, but I can't get anywhere beyond this message. The other odd thing is that when I first tried to do it, I could see the progress at the top of the itunes page. Now, I get a Microsoft progress window pop up across the itunes page that shows my download progress, instead of itunes showing my progress. I'm wondering if I need to disable something on my laptop. Anybody have any ideas? Otherwise, I may have to get a "Genius" appointment at my local Apple store.....I'd rather not subject myself to such ironic unpleasantness.