Thanks for the interest to this little problem (strange behavior) with dropcaps!
"It would be quite surprising if the post order plugin or the attachments plugin cause this issue."
As I wrote in the previous message, I have already checked of the working of blog with deactivated both plugins (and even more - all plugins were deactivated, and all Flashlight files were replaced from fresh version of Flashlight downloaded from Themeforest market today). But the problem with the dropcaps still exists independently of that.
Nevertheless, I have replaced the part of code of the loop-index.php with help of the wp-editor , as you offered. This replacing was break down the links above - when I visited the http://www.fotoetude.com/2012/02/21/kulonleges-nap/ or http://www.fotoetude.com/blog/ after - I could see only the text of the post http://www.fotoetude.com/2012/02/21/kulonleges-nap/ , without of pictures. Maybe, this information says something for you!
I can make the login for checking of working of template for you - if it is required for you, please, give me e-mail for sending the details of support account.
I appreciate your kind helping! Thank you!