What happened to online articles published in K-theory (Springer journal)? As most people probably know, the journal "K-theory" used to be published by Springer, but was discontinued after the editorial board resigned around 2007. The editors (or many of them) started the new "Journal of K-theory" in collaboration with Cambridge University Press. 
Maybe I'm being very stupid or missing something obvious, but I am quite sure that articles from "K-theory" used to be available online via Springer, and as far as I can see they are no longer there. Did I miss something here, or did they just disappear? I can't believe Springer would do that, but then I can't find anything by searching, and the article links from MathSciNet are dead: 

Sorry, the page you requested is unavailable. The link you requested
  might be broken, or no longer exist. SpringerLink is providing
  researchers with access to millions of scientific documents from
  Journals, Books, Protocols and Reference works.

In case it helps, here is the journal ISSN: 0920-3036 (print version) 1573-0514 (electronic version).
Grateful for any clarification. 
 A: I don't have a grasp of the ins and outs of things here, but as of 2021 it seems most of the links in the above answers are broken. Currently it appears that archives of the journal "K-Theory" are available here through Portico. "Journal of K-Theory" doesn't appear to be available through Portico: here's what you get if you just search Portico for journals called "K-Theory".
A: It seems that the archives have been taken down because of "legal issues related to the ownership of the content."  See http://publishing.mathforge.org/discussion/169/clockss-and-portico/#Item_18 for further discussion.  Unfortunately, nobody involved seems to be publicly discussing the situation, and I have not yet been able to learn exactly what's going on.  One natural guess is that this has something to do with how the journal ended, but I really don't know.  In any case, it's outrageous for a journal to disappear, and the community deserves to know why it has happened and what can be done about it.
A: I was the only editor of the old "K-theory" who did not join the editorial board of the "Journal of K-theory". A decision I have never regretted. On the other hand, I do regret that it is no longer possible to access the old K-theory papers online. I do not believe the fault is with Springer. I urge all authors to make their papers available online. If you would like to read a K-theory paper and it is not already online, please ask the author to make it available online.
A: Thanks to a librarian's listserv here an update: Since recently K-Theory is now available through Portico (only available to members) - see http://www.portico.org/digital-preservation/news-events/news/general-news/portico-now-provides-access-to-k-theory-content
But no news if there are any plans to change the situation at the Springer website...
A: It's been a few years, but given that the Journal of K-Theory has also closed, here is a one-stop shop so that people can see where they might access the content of both journals, and which issues:

*

*K-Theory

*Journal of K-Theory
Subscriptions seem to be required to at least some of the preservation services, but at least it's better than nothing.
A: To keep people updated, there are behind-the-scenes efforts to get K-theory available from a non-subscription journal archiving service (EDIT: this one, which releases its material under a CC-BY-NC-ND license). Unfortunately this is progressing slowly. I have no firm date when this could be a reality, but one hope was to see progress by the middle of the year (though I'm not confident). 
PS If one is particularly persistent and know the right people, I believe there is a complete collection of K-Theory articles out there "on the internet".
EDIT2: Given the recent developments between the Journal of K-theory editorial board and Bak, I'm a whole lot less hopeful that issues regarding K-theory will be sorted out anytime soon.
