The most common cause of the issue you have described is the browser being used. To make sure that your browser is not causing the problem you have encountered, I recommend that you optimize your browser settings. To learn how to optimize your browser's settings in Internet Explorer, please check out the Solution by MSFT Roopa S “How to optimize Internet Explorer browser” by accessing the link below
http://windowslivehelp.com/solutions/accounts/archive/2009/03/03/How-to-optimize-Internet-Explorer-browser.aspx
Note: If you are using a browser other than Internet Explorer, see the documentation for that browser.
FYI: Your post has been moved to the correct forum