Something is running in the background to cause this. It could be a legitimate program set to try to update itself or it could be a virus, trojan or spyware. I would first check for and eliminate the latter. You might be able to check for running applications using Ctrl/Alt/Del and bring up task manager.
For 5 years now I have been using a modem on my computer and have had no problems. My INTERNET PROPERTIES: CONNECTIONS setting is "Dial whenever a network connection is not present" and has been for all 5 years. Recently, whenever the computer is not connected, it dials automatically, which it had obviously never done before.
Can anyone help me fix this problem?