A lot of things are not working since a long time, and none did fix them

Klara,

There are always things that are broken.  Some of the things that are broken are caused by Blogger Engineering, other things are caused by the blog owners, and some by the blog readers.

http://blogging.nitecruzr.net/2007/04/etiology-blogger-and-you.html

This will always be the case, as long as people own their own computers, and use them to access the Internet.

http://blogging.nitecruzr.net/2007/04/your-computer-and-blogger.html

And people will, occasionally, see lots of problems.

http://blogging.nitecruzr.net/2011/06/one-form-of-new-car-syndrome-and.html

All that we can do is work on one problem, at a time.  And the people who don't have a given problem will be busy, working on their blogs.

http://blogging.nitecruzr.net/2009/05/value-of-your-blog-is-based-upon.html

Thank you very much, Nitecruzr.

By the way, discussing with some italian users I've discovered that we can fix the lightbox issue by ourselves, adding this string just after </body>

<script src='http://www.blogger.com/static/v1/jsbin/2321381434-lbx__fr.js' type='text/javascript'/>

Can you please check?

Did you provide that detail, in the Lightbox Rollup?

[Problem Rollup] Lightbox Display, Not Working

Can we try to keep reporting each individual problem, in the separate queue?  I know that the multiple problems, apparently unsolved, are frustrating.  I also know that the more we aggregate unrelated problems, the less likely that any of the problems will ever be solved.

I've been here more years than I care to admit.  I've seen thousands of problems reported, and solved.  You have to go one problem, at a time.  And, you have to encourage the forum newbies to report their problems, in the proper place.  I don't know whether you observed it - but one of the other discussions where you posted your rant above, people started posting their own problem reports, all unrelated to the subject of the discussion.

[FAQ] Why Can't I Get Help, By Posting At The End Of A Similar Question?

[FAQ] How do I find all of my posts, in Blogger Help Forum?

[FAQ] How Do I Delete And Edit My Forum Posts?

Nope.
You can do it.
Did you check if it works?

Unfortunately, Klara, my blog does not contain enough images to make it useful for testing your solution.

What specifically did you do, after adding the code snippet, before you saw Lightbox work, again?

After adding the extra bit of code, did Lightbox start working, immediately?  Did it fix all images - or did it only fix images in posts published after the fix was added?

It did fix immediately all images. The old ones and the new ones.

Furthermore you can set again the lightbox on or off as you desire, like before the issue did start.

OK, immediate testing looks good - though I am as always skeptical of mysterious "easy fixes".  But, I'm publishing my findings.

http://blogging.nitecruzr.net/2013/03/the-lightbox-image-display-option.html

I have a number of blogs and have tested it on two that have thousands of photographs on them. One blog contains photographs almost exclusively hosted on Piccasa (Inacityliving) and the other contains many direct uploads the fix is working on both in both Chrome and IE.
The blogs in question are
 
http://inacityliving.blogspot.co.uk/
http://www.liverpoolpicturebook.com/

It Works ! Freaking Awesome!! Thank you :D
My blog -> http://esbenlashportfolio.blogspot.dk/

hey guys,
 
 
that fix u found works.... many thanks !!!

it is working! thanks for sharing! I loved the lightbox it was the first thing what blogger did well since they forced us to use new version and then they messed it up too... But with this string it is working again. I grateful for it, but it would be blogger's job to do it.
 
I wrote about 2 month ago also many thing which is not working including which really annoying for me, the comment moderation. If someone write comment and that is long, not just some sentences, I can't read the whole comment, just the first 4 row more or less, I don't know how many character are, like I could in old blogger, but I has to publish it and then i can read it whether is it ok or not... so where is the moderation funciton in this case if I must to post in every case to read. Moderation means I read before I publish comments... It seems not at blogger's developers. Seriously I think sometimes blogger developers totally unqualified to develope the blogger that that will be useful for users and it works too.

Looking good, Klara!

I'm happy, Nitecruzr.

Now we have to fix the second issue: the links list gadget!  :)