If you are using IE on a slow machine (such as my Netbook) -- or internet connection -- then the 'more' page can take quite some time to finish loading and rendering. If you click on any 'smiley' during that period (in IE) you will recreate the behavior you describe above. By "quite awhile" I mean on the order of several minutes in some instances. Rendering will not continue until you clear the "recover page" (click on 'x')... so once you trigger that message the window will never finish rendering unless you first clear the 'recover page' warning.
Unfortunately, I know of no way to prevent IE9 from triggering the 'recover page' warning when a page takes longer than expected to render (esp. on slower machines). The best you can do is wait for the page to fully load and render BEFORE you click on any of the smileys.
