I'm in the middle of filling orders and suddenly I don't have any or anything waiting to be paid.

There was a lot in both 10 mins ago :S

I can't edit a listing I have either. Won't let me sign in. Just keeps going back to "sign-in" page. Password and user ID are both correct.

Its working again for me. I logged out, had a coffee, watched an episode of Wilfred and when I signed back in it was fixed so I think it was just a matter of time. There were new sales so thankfully whatever glitch it was hasn't affected people's bids and purchases. Hope its fixed for everyone else too

Similar problem here - one minute fine & the next nothing at all in Summary, Sold, Awaiting Postage etc. I had another problem with signing in & being told my eBay ID did not exist a month or so ago but that was isolated to a single computer which needed the cache cleared. This time it is not confined to one computer rather tied to the eBay account. Listings are still visable on search tho' I dont know what would happen if a purchaser committed to buy? 

Was showing some info not available at this time

But it is all back now.

l rang eBay (yesterday when this happened) as l were in the middle of listing and two items vanished.

They said they were doing maintainence and everything should righten itself within the hour.

My listings re-appeared and my store items, but the missing two were still lost. eBay checked, they weren't in the listing queue so refunded my fees and l started again.

Pfft.