I wonder if anyone else has got this problem - occasionally when I'm typing I hit a neighboring key on its rather sharp edge; for example, hold down C key and move your finger slighty up - you'll then hit the edge of D and F keys. It does not happen often, but when it does - it's rather annoying. If I were to replace keyboard on my 7405 - is there an alternative with keys somewhat less rough-edged on the corners, or is it all the same? 
