[apport] dpkg-preconfigure crashed with SIGSEGV

[plaa]

Binary package hint: debconf

I have Kubuntu 7.04 feisty fawn (herd 5), this was the second time it updated.
I updated using adept updater and early in installation it popped up a window and said:
"Debconf on plaa-Desktop
Incorrect nice value.
Please enter an integer between -20 and 19."
I could just press cancel and then adept said "Could not commit changes".
I don´t know if it matters but i had Amarok and Konversation running at the time of update.
I`m not sure if someone has already reported a bug like this, I didn`t find one, but if someone has then sorry, my bad.
EDIT. Oh, sorry I found another like this #87641...

ProblemType: Crash
Architecture: all
Date: Tue Mar 6 11:30:50 2007
Disassembly: 0x676e6979 <free@plt+56>:
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/sbin/dpkg-preconfigure
InterpreterPath: /usr/bin/perl
Package: debconf 1.5.11ubuntu1
ProcCmdline: /usr/bin/perl -w /usr/sbin/dpkg-preconfigure --apt
ProcCwd: /home/plaa
ProcEnviron:
 PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: debconf
StacktraceTop:
 ?? () from /lib/ld-linux.so.2
 ?? ()
 ?? ()
 ?? ()
 ?? ()
Uname: Linux plaa-desktop 2.6.20-9-generic #2 SMP Mon Feb 26 03:01:44 UTC 2007 i686 GNU/Linux
UserGroups:

[Romain Despland (romaindespland)]

I had the same problem with a fresh kubuntu herd 5 install, followed by an update. I have to click on cancel to be able to continue the update