Version: 1.0.0 (using 4.4.1 (KDE 4.4.1) "release 225", KDE:KDE4:Factory:Desktop / openSUSE_11.2)
OS: Linux (x86_64) release 220.127.116.11-0.1-desktop
Currently when Preferences dialog is started, the web camera is activated. At least on my system, the enabled web camera makes preferences dialog somewhat sluggish, so I propose that the camera preview could be activated in the web cam dialog explicitly via clicking a button (similar to e.g. Skype beta). Or activated only when the web cam preferences section is viewed.
*** This bug has been marked as a duplicate of bug 170775 ***