I saw some old linux-headers packages removed this morning, but had no other issues. But I don't understand why it pulled your nvidia-driver and nvidia-kernel-dkms packages. It did not pull mine, which are still installed. You might want to take a look at that issue -- try reinstalling them and find out what is conflicting.
root@imerabox:/# apt-cache policy nvidia-kernel-dkms
nvidia-kernel-dkms:
Installed: 337.12-0.siduction.1
Candidate: 337.12-0.siduction.1
Version table:
337.19-1 0
1 http://ftp.us.debian.org/debian/ experimental/non-free amd64 Packages
*** 337.12-0.siduction.1 0
500 http://packages.siduction.org/experimental/ unstable/non-free amd64 Packages
100 /var/lib/dpkg/status
331.67-2 0
500 http://ftp.us.debian.org/debian/ unstable/non-free amd64 Packages
331.67-1.siduction.1 0
500 http://packages.siduction.org/fixes/ unstable/non-free amd64 Packages
Also, your siduction sources don't look like what is recommended. Here is a better siduction.list, assuming you don't need source packages (you can comment out experimental if you don't want it):
root@imerabox:/etc/apt/sources.list.d# cat siduction.list
deb http://packages.siduction.org/base unstable main
#deb-src http://packages.siduction.org/base unstable main
deb http://packages.siduction.org/extra unstable main
#deb-src http://packages.siduction.org/extra unstable main
deb http://packages.siduction.org/fixes unstable main contrib non-free
#deb-src http://packages.siduction.org/fixes unstable main
deb http://packages.siduction.org/experimental unstable main contrib non-free