Help! My SL 5500, running ROM 3.1.3, is failing to connect to my PC today. It hooked up just fine yesterday through the USB cradle. This morning no connection could be made. I can't restore from backup, I can't sync the address book, and Zaurus File Transfer won't open a connection. I did a soft reset on the Z, no improvement. I did a hard reset, still no connection. WTF?!?