update-manager disables back button when managing conffiles

[ChrisD]

Binary package hint: bugzilla

update of bugzilla through package manager brings up debconf, asking "What would you like to do about params?" with a drop down list. Selecting an option, in this case "show a side by side difference between the versions" and clicking forward gives the next window. However that option was chosen erroneously but the back button is disabled.
Clicking cancel lets the package manager process continue but gives the apparent crash which ubuntu has asked me to report.

Ideal behaviour is to allow the back button to work, or to be allowed to gracefully defer the configuration process. The question "What would you like to do about params?" is also clumsy and doesn't make it clear what is actually being asked. A better phrasing (if I am interpreting correctly is) would be something like "The parameters for the updated version of bugzilla differ from the old version. How would you like to deal with this?".

ProblemType: Package
Architecture: i386
DistroRelease: Ubuntu 8.10
ErrorMessage: subprocess post-installation script returned error exit status 1
NonfreeKernelModules: nvidia
Package: bugzilla3 3.0.4.1-2ubuntu1.1
PackageArchitecture: all
SourcePackage: bugzilla
Title: package bugzilla3 3.0.4.1-2ubuntu1.1 failed to install/upgrade: subprocess post-installation script returned error exit status 1
Uname: Linux 2.6.27-9-generic i686

[Iain Lane (laney)]

I think this an update-manager problem. Reassigning there. Thanks for your report!