Re: is the nvidia driver falling behind?
@wantilles: It is not only xazero with slow KDE4 (or QT4, because even non-KDE4, but QT4 apps are slow). I also have this since KDE4.0, and I don't think that it is distro-specific(I tried on openSUSE from 11.1 to 11.3 and Slackware 12.2, 13.0, 13.1). I know how to configure KDE to work faster, but it is still slow. Also running QT4 apps with "-graphicssystem raster" helps a little bit, but...
I have nothing against Nvidia and their (best) Linux support, but this issue is very old, and irritating