[Pkg-dkms-maint] Bug#630772: Also seeing this

[Phil Miller]

I'm seeing the same issue on debconf 1.5.41 and dkms 2.2.0.2-1, with
some variation in the versions and line numbers involved:

Errors appear after "Removing linux-image-2.6.39-2-amd64

virtualbox is version 4.1.2, and the lines reporting the error are
3
9
11
18
19
26
27
34
35
42
44