Happy new year!
Two days ago I committed patches to Kamera in KDE trunk (4.7) that remove all usage of the kde3support libraries. (It seems that tsegdos had the same idea with KWalletManager.) All the changes I made were to elements of the GUI accessible without a camera. Due to this, I unfortunately was not able to remove the remaining usage of the Qt3Support libraries. If anybody with a USB-enabled camera wants to step up, they can have the satisfaction of knowing that they helped wean one more program off of deprecated libraries. 
On the subject of kde3support and qt3support, I saw some people wondering how many things still depend on it. Fortunately, it is easy to find this out using the “rdepends” feature of apt-cache. Here is the state of things in KDE 4.6:
Reverse Depends for kde3support:
akregator
kspread
kexi
kplayer
k9copy
kvpnc
krecipes
kradio
kmplayer
kmldonkey
kiconedit
kgraphviewer
kftpgrabber
kepas
umbrello
plasma-scriptengine-superkaramba
libkpgp4
libkopete4
libkleo4
libkdepim4
libk3b6
kwalletmanager
kspread
krita
kppp
korganizer
kopete
konversation
konqueror
konq-plugins
kompare
kommander
knode
kmouth
kmail
kinfocenter
kimagemapeditor
kfloppy
kfilereplace
kexi
kdepim-groupware
kdenetwork-filesharing
kdebase-workspace-bin
kate
kamera
k3b
juk
jovie
digikam
cervisia
The Qt3support list includes a lot of non-KDE apps, and most of the apps listed in the kde3support list also depend on qt3support, so I won’t bother posting that list.
