Description of problem:
When K3b is creating an image from a DVD, duplicate image name is detected, but
writing is allowed, even if the user says "no" to the ensuing dialogue.

Version-Release number of selected component (if applicable):
k3b-1.0.3-3.fc8

How reproducible:
Always.

Steps to Reproduce:
1. Start K3b
2. Select Tools,Copy DVD
3. Set options to "Only Create Image", <existing file>, "Ignore errors"
4. A dialog requesting permission to overwrite the existing file appears
5. Select No
 
Actual results:
K3b copies over the existing file anyway.

Expected results:
K3b should return to main menu, or offer the user a chance to specify a new name

Additional info:

What I actually did was to copy to a new file, then repeat the copying with the
same parameters, just to reassure myself that I wouldn't accidentally overwrite
an existing DVD image.

Assigned priority as High because of the risk of data loss. May apply to all
platforms, did not test that.