Hi all, I just got back from an 8-day long trip to mainland China and when I got back I realized that I had left my MBA unplugged and in sleep mode. When I came back, I opened the lid and found that hitting the keys on the keyboard didn't work. Then I realized that the battery was probably completely out of charge. After I plugged it in, I opened the lid again and hit the power button. The device powered up but after it got to the login screen I could not type my password in or move the cursor. I tried plugging in a USB mighty mouse but it still wouldn't register. I was replacing some of the USB driver files on the MBA before I left and I think that might be the problem. How do I fix this if there's no network boot or firewire? I think my warranty might be voided too because it's had a few nasty bumps... but I don't think that's what's causing the problem. Thanks in advance!