If you are having problems typing posts here, specifically if characters are being dropped, it's a result of using Internet Explorer 11. Something in that browser (only) interacts with the WYSIWYG editor in this widely used forum system. I have researched it on the "Comm Center" for vBulletin, and the consensus is that vBulletin 4 does things that trigger a problem in IE, and the vBulletin people say they will not "fix" it.
I suggest you install the Firefox Browser which is a nice low footprint browser without all of the back channels into Google that Chrome has. Chrome will work just fine as well. Use either of these and you'll have no typing problems with our Comm Center.