Hi sister, I experienced the same problems recently, it seems to be a problem with Internet Explorer 7.
Try to do these following steps and see if the problem goes away.
Click tools on the right hand side,
click Internet Options
Click settings under Browsing History
At the first option, where it says Check for newer version of stored pages
Click the first option "Everytime I visit the webpage"
Click ok and ok again.
It should work
God bless
Much love
teraside