Version:           unspecified (using KDE 4.4.3) 
OS:                Linux

Hi devs, thanks for your awesome work.

I have this little trouble that burned my brain trying to find explanation.
Currently I'm running an Arch Linux x86_64 KDE SC 4.4.3:

if the ç character is present in the user password, KDM will fail to authenticate, I need to switch to a text tty and log there and then launch KDE SC through xinit.

I asked in Arch forums and everywhere else and seems nobody having this issue. I'm crazy about this because I'm indeed running a fresh Arch system, no time to corrupt it.
Also, I'm running an Spanish (Argentina) system, everything including keyboard set correctly at boot time: just to try key is mapped ok I write password in username field and it shows ok.

So, I don't know/think this is a serious bug without -it seems- anybody than me experiencing it, but still a puzzle on what can be happing behind scennes... I don't know how to debug a login manager :P I know how to use gdb/valgrind after an application crashed to create a more useful report, but I'm out of ideas here.

Please tell me if you want to me to try something, best!

Reproducible: Always

Steps to Reproduce:
Set your user password with any string containing ç character, do it with Kuser or just at CLI.

Actual Results:  
KDM fail to authenticate.

Expected Results:  
Succeful login.

Arch Linux x86_64 + KDE SC 4.4.3 Spanish (both system and KDE SC)

Note: other users running the very same configuration (one italian and the other english speaker) don't have this issue.