i have reloaded all the files, except config-inc, config-intc and inc-ads. Teh results are the same.
If the mail is send trought "contact the user" the mail are fine, but all the "automatic mails" due to suscriptions are blank, only the domenin sender and the sender (from) are correct, there are no subject and no message.
I have revised my english.pjhp file and compared the file with the original from 2.6 version. It seems there are identical in the way of number and name of globals variable. I have apreciated the original file have duplucated the username global variable (and another one i do not remember now)