Yeah I am pretty positive that this is an internet explorer issue.
What I am going to have you do is clear your cache and cookies and temporary internet files.
These files are bits of the webpage that is saved on your computer in order to make it load faster however sometimes they can cause problems like this so you need to clear them out.
This will cause you to have to log back into any websites you are currently logged into and will also erase your recently visited website history but it must be done from time to time to keep the browser operating properly.
If you would like before clearing your internet explorer history you can try another web browser to confirm that it is just an internet explorer issue which I am almost positive it is.
You may try this alternate free web browser called firefox to make sure that it is in fact an internet explorer issue.
Click the link and download and install the browser and try your email again:http://www.mozilla.org/en-US/firefox/new/
Now if it does work in firefox but you would like to fix your internet explorer browser here is how you can that.
In your internet explorer browser
Click on Tools (if you do not see tools click on the gear icon on the top right) next choose Internet Options.
A box will open, look under browsing history in that box and click delete and another box will open up. Put a check mark next to all of the options except for passwords and click delete again.
Once it finished close internet explorer and open it again and your issue should be fixed.
If you need further help please reply back to me and let me know.