Adept Manager corrupted my /etc/apt/sources.list

[fpe]

Binary package hint: adept

In Adept Manager, I clicked on "Edit Software Sources". I changed the "Download from:" select from "Server for Germany" to "Other ...", expecting to get a list of available mirrors, as it was in 9.04.
Instead, nothing happened, and after some more clicking, adept crashed and apport-kde showed up, just to crash also when I clicked on "Report".

After I restartet Adept Manager, it said something about "could not read package sources, fix manually", and indeed, all the URLs are missing in my /etc/apt/sources.list, so I had to restore a backup:
<snip>
deb karmic main restricted
deb-src karmic restricted main multiverse universe #Added by software-properties

## Major bug fix updates produced after the final release of the
## distribution.
deb karmic-updates main restricted
deb-src karmic-updates restricted main multiverse universe #Added by software-properties
</snip>

ProblemType: Bug
Architecture: amd64
Date: Thu Nov 5 07:15:25 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/adept
NonfreeKernelModules: fglrx
Package: adept 3.0~beta7.2ubuntu3
ProcEnviron:
 LANGUAGE=de_DE:de:en_GB:en
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: adept
Uname: Linux 2.6.31-14-generic x86_64