Well shoot, man, lol. I know for a fact reinstalling the program isn't gonna do any good. Because Office 2010 was literally just installed a couple of days ago. 2007 was installed a while ago, however, there was a point in time that I reinstalled Office 2007 and there was no change to the typing lag. It's not like a MAJOR lag, it's just a me being picky lag - lol. As in it's noticeable when you're looking at the screen an I type in Wordpad/Notepad/This-box-I'm-typing-in-right-now, then go to Microsoft Word and type a line. Pretty sure the average person wouldn't notice. The tech buddy I have that installed Office 2010 beta [which seems damn near complete to me] with his never expiring key issued from Microsoft couldn't tell. But when I told him to type in another program then type back in Word, he did notice it too - so like I said, picky lag. I'm on a Dell keyboard, not sure what the model is but it came with the XPS [that I ended up buying for nothing seeing how I rebuilt the computer from ground up including a case], medium profile keys an it's hooked up through USB. I don't think it's the keyboard. It makes sense that it would be the realtime spell checks and the other couple of realtime options there are - but I shut those off and it was the same.