I was wondering if anyone else got this issue.
While running IE10 both in Desktop and Metro UI (at the same time) sometimes my text will lag and skip letters that I type. Mostly this happens to me while having facebook open in a tab in Metro UI and Desktop mode at the same time. It hasn't happened on many other sites. Sometimes i get it on xbox.com if i have the same page opened in both metro and desktop mode. This hasn't happened to me in any other application yet. I'll try to keep updated if i find anything else out.
Thanks, - Alex