The Most Complete Update Yet!!! -- OK, so when I read on this thread that a fix might be in the pipeline I decided to call Sony to follow-up. Indeed some action has been taken: a fax has been sent, at least to the Sony Authorized repair center in my area (Norman's Electronics) detailing what needs to be attempted by a tech who is faced with this problem (verticle white line/wave on 1080i). First he/she is to try to fix the problem in the service mode (I asked Norman's Electronics what specifically would be attempted but the woman said she might get in trouble if she told me the codes that required changing); if the service mode changes don't alleviate the condition then the v-board(?) would have to be brought in for a number of changes (the woman said that she counted 35 things that needed to be moved/altered, fixed, etc.); on most of the XBRs, the components needed for these changes are already mounted on the board, but for some of the more recently made sets (manufactured in and after October of this year -- I bought mine in late October, but they had been in the Circuit City warehouse for at least a month), the parts would need to be ordered OR for all sets where the changes do not work or the parts are not mounted, a new board will be available at a later date, but as of right now, there is no estimate on when this new board will be available.
I will be re-visited by my tech on December 31st (and I have specifically requested that he re-read the fax before coming or better yet, bring a copy of the fax so that he won't forget how to fix it) and hopefully he will be able to fix the problem in the service mode. I will endeavour to follow his progress and see what he changes, especially if it works. In any event, I will report back after his visit.
For anyone else who has this problem, call Sony, get the number of an authorized dealer in your area and mention this fax when you call them so that they can be on the right page when they come; simply inform them, if they haven't received this fax, that it is available from their Sony Tech Rep. The best news of all is that Sony is finally aware of this problem and is taking aggressive actions to fix it!