This was the EXACT issue I had after I unplugged my hub and plugged it back in. It wasn't even in the middle of an update when I did that. Your hub, sadly, is dead. It will not work again.
I called 0800 800 150 and they sent a new one to me (with another free phone!) and everything's fine now.
This only happened to me when I unplugged it (so I could rearrange my computer cables), and when I plugged it in, and tried everything, only wireless and data will remain on after its boot cycle. It cannot be pinged or anything, definately dead.
When you call that number, they'll ask you to reset it and try the usual troubleshooting, and then they'll place a new one on order for you and you may just get another free phone like I did! After 3 days I called again on the same number (got through to a UK centre this time), and they confirmed it was already on order and they would provide me a tracking number the next day. They called me back the next day with the number, and I recieved it the next day too.
EDIT: I would like to compare something with you. Does your dead hub sound all plastic-creaky when you press its casing? My dead one does. My replacement hub doesn't, and feels nice and secure.
Let me know if your new replacement one (when you get it) feels solid. If this is true, then they must be giving us refurbished ones that have been sent back before. Sounds stupid, but please give this a try.
Edited by Ballistics (Sun 30-Jul-06 22:32:25)