This morning before I went to work, I did a power-plug re-boot of my 920
(Scary, considering I haven't changed the battery and don't know if it's still the original one.. ) And it came back on fine, still on W5, and still no X4. I better be able to use W5 or AI. When they sent AI, it showed up instantly... no re-boot needed, but I can't even force-feed it X4!