Problems with labels

After playing a bit with labels for this blog's posts, I found that Google's having problems with them. In fact, labels are sometimes in lowercase and sometimes in uppercase. After a bit of googling I noticed that other users are having such problems too as described here.

Not all posts are found under the appropriate labels. Therefore, when you want to view posts under a specific label, you will always have some posts missing. That's why I removed all labels for my postings. I will add them again when the issue is solved.