You may have gotten an alert from my reply to your other post, which I have since deleted.
Where did OneCare tell you to uninstall the program? Were you using a beta copy of version 2.0 and you received an email that your subscription to the beta was canceled? If so, yes, you needed to uninstall and reinstall from http://onecare.live.com
You should not have paid for a second subscription. If you did, using a different LiveID, contact support to have the new subscription canceled. You can verify the status of your subscription by going to http://billing.microsoft.com and signing in with your LiveID. If you paid subscription was not set for renewal until April of 2008, updating your credit card information would not cause payment to be taken now.
Since OneCare is not functioning, once you establish the status of your account and the LiveID you are subscribed with, I recommend uninstalling OneCare, running the cleanup tool - http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=828910&SiteID=2 and then reinstalling from http://onecare.live.com and activating with your subscription LiveID. If you need to contact support for help with the reinstall or with your account information -
How to reach support - http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=2421771&SiteID=2 If it fails to validate your subscription, select the option that you are using a trial or beta copy and you can proceed to email support without validation once you've signed in.
-steve
