Description of problem:
When users try to cancel removing VFolder, dialog box pops up complaining
'Segmentation fault'.

Version-Release number of selected component (if applicable):
evolution-1.4.5-21.el3.x86_64

How reproducible:
Always

Steps to Reproduce:
1. 'Tools' -> 'Virtual Folder Editor'
2. Select one Virtual Folder
3. Click 'Remove'
4. Click 'Cancel'
  
Actual results:
Dialog box pops up complaining 'Segmentation fault'

Expected results:
Selected VFolder will not removed, no error message should be given

Additional info:
1. rpm -qa | grep evolution
evolution-devel-1.4.5-21.el3.x86_64
evolution-connector-1.4.7-10.x86_64
evolution-1.4.5-21.el3.x86_64
evolution-debuginfo-1.4.5-21.el3.x86_64

If there's more info you need to know, please drop me a mail, thanks a lot.