IE problems, I know them well. You could try resetting through Tools>Internet Options>Advanced, or even uninstalling/reinstalling. Which depending if IE9 came with your machine is done in a different way than a typical program.
Internet Explorer 9 - Uninstall
I read today that IE had it's biggest drop in share. It's down to just over 52%. When it drops below 50% I am moving on (or maybe sooner). Good luck.