Version: (using KDE 4.4.0) OS: Linux Installed from: Ubuntu Packages As my experience shows KDE applications have no support for passwords that are longer than 16 characters. This is especially problematic when you have to log in to an external service where you have a longer password. I discovered the problem first when I couldn't connect to my WLM account first from Kopete, then from KMess. It worked fine from Pidgin and Meebo though. The next time I ran into this problem was when I got a file encrypted using symmetric encryption with GPG, having a long password set on it and KGPG couldn't decrypt it, because of the long password. Kontact also suffers from similar troubles, so I came to the idea it has to do with something in the KDE Platform itself. I hope this could be changed in the future.
On KDE 4.7, I am now able to use long passwords.