I believe that somewhere on the boards it's mentioned that there is maintenance done during certain hours.
When Auctiva does maintenance, if my memory serves, Auctiva turns the gallery/store window off during that time.
I'll try to find the post later...I'm off to life in Florida.
In the mean time before I get back to search it, perhaps you could go to find on the tool bar and use search for the link to place here.
Thanks!
My Best,
Donna