There was some changes with the firmware packages.firmware-nvidia-graphics was installed automatically on boxes which don't have a NVIDIA device in their system.
This blows up the initrd images to almost 4 times the size.
If I apt remove firmware-nvidia-graphics the image sizes remain at the usual 60MB range.
So I don't know what firmware gets included in the images, but for me it looks that there should be something changed in this magic.
