It seems impossible to actually download Lightroom b3. All of
the "download" links just go to the normal downloads page,
which only lists actual shipping products, not pre-release stuff. I
tried all except the Mac-with-content link and always got the same
It appears that you may not have cookies enabled for the
Adobe website. The behavior that you describe typically occurs when
our download server cannot confirm that you are a registered and
logged in user. Please try to enable your browser's ability to
store cookies and then try again to download Lightroom. Hope this
Cookies were not the problem: I have cookies enabled for
adobe.com in both Netscape and Internet Explorer. However, I
did manage to solve the problem by temporarily turning off Norton
Internet Security. With Norton out of the way, your website behaved
well and I was able to download the beta.
I post this so you know how the story ends, and for the
benefit of others who may encounter the same misbehavior.