i personally am very surprised by this complaint, I would have thought more people would have been making more of a fuss over this if it were seriously flawed. As is generally true, if this is an intermittent problem it is much more difficult to address... nevertheless we will take a second look at our biding code and see if we can see anything silly happening. More reports are useful as well.... simultaneous observation from mutliple computers/multiple browers especially, in order to isolate as to whether it is a browser/cache issue or something on the backend.