What are these strange characters ?

[willy2010]

It happens when someone (guest, users or admin) clicks on the user's name ... helppppp! have a look at www.videotaller.eu

[Αndré]

Seems like someone has left debug info somewhere in the code. Have you modified some core files or do you have installed any plugins?

[willy2010]

Seems like someone has left debug info somewhere in the code. Have you modified some core files or do you have installed any plugins?

you'are great Andre !!! I started uninstalling several plugings and the problem was using : "newsletter" ver 0. 16!   Thank you very much for your patient ! 

[willy2010]

It happens when someone (guest, users or admin) clicks on the user's name ... helppppp! have a look at www.videotaller.eu

[Αndré]

Marking as solved.