You may have some corrupted addresses resolved and saved in your Domain Name Server resolving protocol.
Take the following steps: (the recommendation may not fix the problem, but it is safe.)
Start - Run - (type)cmd - Enter
This brings a DOS style window where you will see a blinking cursor.
At the blinking cursor type:
IPconfig /flushdns - Enter <--notice the required space before the "/"
IPconfig /release - Enter <--notice the required space before the "/"
Ipconfig /renew - Enter <--notice the required space before the "/"
EXIT - Enter <-- makes the DOS box disappear and returns you to your Desktop.
Each of the above steps may take a few minutes to complete.
Please just be patient.
Wait for a printed statement of completion and return of the blinking cursor before entering the next command.
The above should fix you up in most cases.
If it doesn't then I'd be suspicious of possible browser hijack infection.
So if the above doesn't work for you....
Post a HJT Log over into the Malware Removal forum.
Edited by Doug, 26 July 2007 - 09:35 PM.