Quote Originally Posted by Oren Grad View Post
Evidently it was discontinued around 1995, as per this discussion list post from 1999:

ILFORD ID 11 Plus was discontinued about 4 years ago because it was found
that Cinnamic acid disulfide appeared to reduce the film speed of some new
technology films.

http://www.usask.ca/lists/alt-photo-...ct99/0358.html
If it was discontinued it was "FIXED" and reintroduced because it's still available....

http://www.ilfordphoto.com/products/product.asp?n=28

http://www.bhphotovideo.com/c/produc...Developer.html