My friend suggested me the following solution. Download HiJackThis - this program will help us determine if there are any spyware/malware on your computer. 1. Double-click on the file you just downloaded. 2. Click on the "Unzip" button to install the newer version. 3. It will by default install to the directory - C:\Program Files\HiJackThis\ 4. If it gives you an intro screen, just choose - Do a system scan and save a logfile. 5. If you don't get the intro screen, just hit [scan] and then click on Save log. 6. Post the HiJackThis.log file here.