I've been tracking the views counters for all my 135 auctions regularly and sending the auction numbers to support@ebid.net when they decrease. I would recommend that as many of us do this too, so that they can see it is a big problem.
I can send you an OpenOffice.org spreadsheet that highlights decreases, if you want.
I think it is something to do with the auto-relist processing, as it only seems to happen within 24 hours of a relist, but you may be able to prove otherwise! eBid are looking into it, but.....
.......hollandnumerics