I think you can always mention the project and your role on it. This is always a nice addition to a CV and it gives some examples to support what you said you did in the x years you worked for this company. I can see how in rare cases the name, location and final client of the project might be a little inappropriate to mention. However, as the information is already in the public domain I think you should be comfortable mentioning up to the level of detail on the company website.
I'm not sure how much detail your putting down; but its also not a good idea, in my opinion, to mention problems on projects, especially if its embarrassing to the client or you former employer. You can always wrap this up in something like "over came a range of challenges", or "a complex fast track project with a range of challenges that had to be solved at short notice", etc, etc.
An additional point - its probably a bad idea to add so many projects in a great amount of detail that your CV grow to more then 2 or 3 pages. If you really want to list every project you worked on try tabulating it and including as an addendum or appendix to a CV. Although don't expect everyone prospective employer to take the time read it in detail.
Good luck with the job hunting.