From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20040922
Description of problem:
When you choose to check the cd, you are brought to a dialog box which doesn't give you an option to back out of the check. As a cd check takes a long time, a simple back button can save someone who is reinstalling a big headache.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Choose to check the cd
2. Try to back out
If you do 'eject cd', you get the chance to continue without checking your cd.