You have something redirecting your browser.
Clean all temp files, cookies etc. from the browser. With IE 8 or 9 click Tools amd click Delete Browing history. The new window that opens check mark all listings then click delete.
Chrome click the wrench top right corner then tools and then Clear browsing Data. Then follow pic below.
Set curtain as shown Check all boxes then click Clear Browing Data.
Other browsers may be similar.