I have kde configured to launch the screensaver when I put it to sleep / resume.
On the resume, the screen saver is running, and, on the first keystroke it goes away and the login comes up with my use preselected and the password form focused.

In KDE<=4.9, the "remove the screen saver" keystroke was forwarded as the first password character, so I simply start writing the password, and the login password form is correctly filled.

In KDE 4.10, I see the "remove the screen saver" keystroke is not forwarded, and the login form has the password field "empty".

Reproducible: Always

Steps to Reproduce:
1. set a screensaver on the lock screen settings
2. suspend / resume
3. insert the first password character
Actual Results:  
the password field is empty

Expected Results:  
the password field has the character inserted