Description of problem:
The installer hangs after I checked the boxes for software to be installed. I
checked all three boxes (Office, Software, Web). If I continue without choosing
special packages, the same things happen as when I would like to choose some. So
after clicking continue, I get a dialog that tells me my CD isn't able to be
unmounted, it could be in use on tty2. If I check out tty2, there's nothin' in
use. When I tried to unmount the DVD manually with "umount /mnt/source", as the
dialog told me the dir, I wondered because there is no dir with such a name.
What to do? :)

Version-Release number of selected component (if applicable):


How reproducible:
everytime I start the installer

Steps to Reproduce:
1. Start the installation
2. Choosing "New Install" (no update)
3. Use old LVM for installation
4. continue until software selection appears
  
Actual results:
The only choice to click on "OK" in the dialog, can't continue
In case that I tried this on my notebook, I also tried to hard-unmount the DVD
by opening the Device, but the error still occurs and there seems no way to get
this crap running.

Expected results:
installation should continue with either installing the software, or (if i
chosed the option) display a package-list

Additional info:
There's no ability to create any Log-Files.
On tty3 I get the following msg:
21:33:41 ERROR : exception in unmountCD: (16, 'Das Ger\xc3\xa4t oder die
Resource ist belegt') <- device is busy or in use i think ;)