The Cancel button only cancels selection of options, not execution of sosreport. If the user was trying to exit sysreport it may appear hung if verbose output is not enabled
I just commited a fix on SVN (revision 92). -- Navid
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2007-0496.html