computer experts My computer is always giving me the message that someone else is logged on to my computer?
454851
You may be logged into another computer and forgot to log out. (School, work, or a library computer. Or even at a friends house.) If you check and you are not still logged into another computer, I would contact whatever program, (Yahoo, hotmail) you are trying to log into and see if your IP address matches the one that you are supposedly logged into.
277124
If you are truly talking about the windows "Net Send" command the computer of origin is part of the message and message box.  You could then find that computer and possibly find out who was signed on at the time.
159038
Hmmm - is it her computer? Then why is it your issue? \n\nCould be she has imaginary friends or knows you pry and doesn't want you to know the names of who she is really listing. Either way, if it's her computer it's her business.
151059
It's pretty hard to notice if someone is hacking your computer. Those ebay scam emails appear to everyone, just ignore them.\nA good way to protect yourself from hackers is a firewall. Windows XP SP2 comes with one. To make sure it's on, go to Control Panel, and then check your Windows Firewall settings. If it's set to on, you're protected from most hacker attempts, but not all.
391300
If you share a computer with more than one user, then logging out of your screen name will prevent someone else from accessing your account while you are not at the computer.
627325
if you have a computer that has different "users" such as you click on the icon (when your first reload your computer) and it says "mom" and the other one says "dad" etc. and one of them is logged on you need to log them off and then log back into yours and then make sure everything is closed and then delete what needs to be deleted.
939965
i think there is no such way by which you can check that someone is accessing your mail from other computer and he/she can again mark it as unread.\n\nPLz tell me if you can get any method.
629123
You probably have a trojan in your system that is leaking all the info.Get an anti virus like norton and remove the trojan.Or it could well be someome really close to you playing  a fool on you.
1083654
Yes ....Someone else's computer
640323
well where did u get the pc from?\nand does the pc have a Certificate of Authenticity\neg a little label which has a serial number on it??\nu would only get the message if your windows xp serial number is the same as somebody else'es\neg a copy of xp.
198793
Well you obviously have another account set up on your computer which is still logged in when you log onto your account.  It just warns you so you know that the other person might have something going on that needs to be saved before you completely shut it down.
395833
You probably have a hijacker on your system.\nTry Spybot S&D at http://www.safer-networking.org/en/home/index.html
704784
You could log onto the routers maintanence page and see wh ois connected to it, and see fi it has a logging function you can use to see who logged on previously.\n\nThe best way to stop other people to use it is to change the "SSID" name to one only you know, connect up your laptop and the turn "SSID Broadcast" to "off" so nobody can see yoru signal unless they know what it is called.\n\nUsing security like WEP etc. will also help stop unwanted people
56163
I agree with the first guy, though there is a small, very small chance that someone is indeed using your name.  Someone you know?  Or just could be because your computer froze and it didn't sign out and thus yahoo things your really signed in and ofcourse you logically know your not.  So yeah....
1015679
if someone has stolen your password, or if you left yourself logged in at a public computer terminal at a library or coffee shop or the like, someone could be posting as you.\n\nif you suspect this is the case, change the password on your account immediately.\n\nhave you ever had anyone quote something that you theoretically posted or sent when warning you?  if so, was it something you wrote/sent?  don't forget different people have different tolerances for things, and you need to be mindful of your audience.
570870
That other person was still signed on in your computer. Just sign off and sign on as you.
312960
The message might be related to a malware infection. There are a couple of free scanners that you can use that should fix the problem.