Could not debug code in MS VS 2010

Hi,

I have a problem with my MS VS 2010 Professional, each time I set a break point to debug my code line by pressing F5 to debug it, it doesn't trace the error however it shows "Confirm Form Resubmission" dialog box from Chrome browser.

Please see screenshots: http://imageshack.us/photo/my-images/842/l62p.jpg/ and http://imageshack.us/photo/my-images/571/9g6n.jpg/

How could I resolve this issue.

Thanks.