If, unwillingly, personal information comes up, there is a chance that some malicious malware has been installed on your computer. Let's start from scratch :
* Clean your Cache and Cookies in IE:
* Close all instances of Outlook Express and Internet Explorer
* Go to Control Panel > Internet Options > General tab
* Under Browsing History, click "Delete".
* Click "Delete Files", "Delete cookies" and "Delete history"
* Click Close below.
* Clean your Cache and Cookies in Firefox (In case you also have Firefox installed):
* Go to Tools > Options.
* Click Privacy in the menu..
* Click the Clear now button below.. A new window will popup what to clear.
* Select all and click the Clear button again.
* Click OK to close the Options window
* Clean other Temporary files + Recycle bin
* Go to start > run and type: cleanmgr and click ok.
* Let it scan your system for files to remove.
* Make sure Temporary Files, Temporary Internet Files, and Recycle Bin are the only things checked.
* Press OK to remove them.
Than, in normal mode, run an online antivirus check from at least two and preferably three of the following sites. Suggest 2,4 and 5BitDefenderComputer Associates Online Virus ScanPanda's ActiveScanTrend Micro HousecallWindows Live Safety Center Free Online ScanThis scanner from Trend does not require an Active X to run.
1. Detects and removes malware ( viruses, worms, trojans, etc. )
2. Detects and removes grayware and spyware
3. Restores damage caused by malware to your system.
4. Notifies about vulnerabilities in installed programs and connected network services.
5. Multi-platform support for: Windows, Linux, Solaris.
6. Easy-to-use with the Microsoft Internet Explorer and Mozilla Firefox.
If nothing comes up than do this
IMPORTANT NOTE: Backdoor Trojans are very dangerous because they provide a means of accessing a computer system that bypasses security mechanisms. Remote attackers use backdoor Trojans as part of an exploit to to gain unauthorized access to a computer and take control of it without your knowledge. If your computer was used for online banking or has credit card information on it, all passwords should be changed immediately to include those used for email, eBay and forums. You should consider all your passwords to be compromised. They should be changed by using a different computer and not the infected one. Do not change passwords or do any transactions while using the infected computer because an attacker may get the new passwords and transaction information. Banking and credit card institutions should be notified of the possible security breech.
If the 3 online scans plus the two rigel has suggested come up clean we should took a look at your safety measures which were installed