forced sign out hot mail says i am useing two computers or two accounts ,iam not doing this. also i have been accused of sending bulk mail ,not guilty of that am i being hacked?

Binary package hint: firefox

Forced sign out on hot mail claims I must sign back as they think I am useing two computers .I am not ! Also getting failure to deliver notice on Mailer Dameon for bulk mail I did not send. I have a secure wifi which I dont need to enter my code each time now I am frequently get knocked off line and have to enter the code each time. Small things happening with the mail all the time ,improper delivery ,being accused of doing or sending things I am not. In my opinion this is a security breech!!!!!!!!!!!!

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: firefox 3.6.6+nobinonly-0ubuntu0.10.04.1
ProcVersionSignature: Ubuntu 2.6.32-23.37-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-23-generic i686
Architecture: i386
Date: Sat Jul 10 17:41:06 2010
FirefoxPackages:
 firefox 3.6.6+nobinonly-0ubuntu0.10.04.1
 firefox-gnome-support 3.6.6+nobinonly-0ubuntu0.10.04.1
 firefox-branding 3.6.6+nobinonly-0ubuntu0.10.04.1
 abroswer N/A
 abrowser-branding N/A
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox