when installing amd64 image from DVD on a VMWare Workstation 11 hardware,
choosing expert install,
when prompted to insert DVD # 2, I change the iso file mapping in VMWare,
then I get a warning from vmware that the cdrom door is locked by the software.
If I force cdrom change, debian installation fails to detect dvd (or drive)
and even by replacing DVD # 1, cdrom drive remains undetected and installation
cannot resume.

the same worked perfectly until debian 6.0.10

seems to be connected to two other bugs listed : about "non common cdrom"
and "drive not detected if empty"...

I selected "important" severity as this makes the software still usable
with a network mirror, but impossible for an unconnected computer.