ScottR said:
Every time I try to log in, I get that screen. I can't get past it without entering the information. So, I can't change my password.
I just tried by PayPal account and got the same damn thing.
Have my accounts been hacked??
Sounds more like a client-side hack - It would appear from your description that your PC has a Virus infection that is causing you to see this message. The virus has either statically re-written your local links to Ebay and Paypal to a fake address that shows the message about your account being invalid, or is actively redirecting you to this fake address via a program in memory all the time.
To test this simply manually type "www.ebay.com" into the address bar and see if it comes up OK. If it does DO NOT LOGIN (See below)
What I suggest you need to do is the following:
1) DO NOT LOGIN TO ANY PRIVATE ACCOUNT ON THAT PC until you have absolutely guaranteed it is clean.
2) Use a trusted PC (EG At a Library, Internet Cafe or a friend's system) to logon to any private account (Ebay, Paypal, online banking etc.) that you care about and change your password ASAP. DO NOT use another PC you may have at home that was networked with this one, as this may be infected too.
3) If you have a Paypal account call your bank/credit card company linked to that Paypal account and ask them to put a fraud watch on your accounts ASAP.
4) If you already have an AV and/or Firewall product installed it has failed and been compromised. You have either let it lapse, not configured it correctly or not kept up to date with Windows Updates. You need to get a good, up-to-date set of AV and Firewall software and clean your PC ASAP. As an IT professional I'd recommend if you are not comfortable doing this that you take your PC to a local service location, like BestBuy or CompUSA, and pay them to do it for you.
Good luck.