Isit possible to have a problem couse by 2 users account reflecting on my messenger? Or it`s simple something wrong qwith my PC. Anyway I decideed to formatated and use one single account. To prevent the problem occur again.

Wait... so two people are logged on to one messenger (which one) account, and you reformatted the computer just because? I'm a little confused.

Well I couldn't half read what you said (sorry) :D but yeah, which messenger?