F15 preupgrade: lots of uneraseable dupes

[Joe Zeff]

On 10/10/2011 01:10 PM, JD wrote:
> I have done 5 upgrades so far that simply failed.
> If you have not followed this thread, then please
> read what I posted re: what failed.

And, as I pointed out in another message, your experience is very, very 
atypical.  I think you're going way too far in asserting that the entire 
process is flawed when you're (almost) the only person having trouble 
with it, and that you'd be doing better to ask, "Why doesn't it work 
*for me*?"