Using Ctrl B Crashing Editor

Since I upgraded to WordPress 3.1.1 I have had issues on a few of my sites with the ‘ctrl+B’ key crashing the wordpress editor. Clicking the icon is fine, but if I use the shortcut tehn I can continue to write, but changes will not be saved, and I cannot revert away from bold (Pressing any other icons does nothing).

I don’t mind clicking the icon, but I thoug tyou guys should know aout the issue!