OK, i have done something that seemed to have work.. i still haven't done enough tests to know if the problem will come back or not, but here's what i've done:
Because of what evanz said about spyware scans i remembered that this could be a problem because of some incopatibility, or whatever with the anti-virus (i think i've read something like this before)
And I starter comparing my computer to my cousin's and my girlfriends' <- cause none of them have ever had this same problem.
Well, the main difference between our computers is that both their computers run on Windows 8 and use Windows Defender as antivirus system while i use Windows 7 and use Microsoft security Essential. So, i unnistaled Microsoft Security Essentials and activated Windows Defender on my PC aswell.
So far, this simple change has made possible for me to change account without getting disconnect... but i haven't done many tests yet.
anyway, my advice is, if you're using windows, unnistall whatever anti-virus program you're curently using, and activate Windows Defender instead.... it's worth a try.
