Comment 3 for bug 975793

No modifications on aptitude / apt configs.

Here is what I do :

aptitude clean && aptitude update

This work fine and update package lists corectly.

But now, if I do either 'aptitude safe-upgrade -d -y' or 'aptitude safe-upgrade -d', here is what I get :

root@precise:~# LANG="C" aptitude safe-upgrade -d
The following packages will be upgraded:
  dpkg insserv iproute login passwd update-notifier-common
The following packages are RECOMMENDED but will NOT be installed:
  libatm1
6 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 3574 kB of archives. After unpacking 1024 B will be used.
Do you want to continue? [Y/n/?] y
Get: 1 http://fr.archive.ubuntu.com/ubuntu precise/main dpkg i386 1.16.1.2ubuntu6 [1813 kB]
Get: 2 http://fr.archive.ubuntu.com/ubuntu precise/main login i386 1:4.1.4.2+svn3283-3ubuntu5 [287 kB]
Get: 3 http://fr.archive.ubuntu.com/ubuntu precise/main update-notifier-common all 0.119ubuntu5 [48.0 kB]
Get: 4 http://fr.archive.ubuntu.com/ubuntu precise/main passwd i386 1:4.1.4.2+svn3283-3ubuntu5 [935 kB]
Get: 5 http://fr.archive.ubuntu.com/ubuntu precise/main insserv i386 1.14.0-2.1ubuntu2 [50.1 kB]
Get: 6 http://fr.archive.ubuntu.com/ubuntu precise/main iproute i386 20111117-1ubuntu2 [441 kB]
Fetched 3574 kB in 0s (9562 kB/s)
_

And then, aptitude loops without sending any output nor logs (aptitude, kern, message).

If I do 'aptitude safe-upgrade -y', then aptitude downloads corectly it's packages then install them without problems.
It seems that this is ONLY the '-d' option which causes problems. The problem is the same eitherin my native language (fr_FR.UTF8) or by forcing english language (LANG="C").