I have the exaact same problem, I'm quite a quick typer on my curve, and some letters just don't "show-up".
I did resolve a bit of my issue - gtalk was always running in the background, and was eating my bandwidth/ device memory - just by closing it I am 80% back to full speed and pleasure of my curve.
Originally Posted by jrich23
I can't find another post on this topic, so am writing my own to see if anyone else has the same problem. I just got the Curve 8300 (ATT, enterprise) and am having a major issue where the Curve misses on letters typed quite frequently. I type fairly quickly on the keyboard, and at the end of a sentence many letters are missing. I hear the "click" from the button, but nothing shows up on the screen. Typing slowly works, but is a pain. Have used Blackberry and Treo for many years and never had this problem. Any thoughts?