When having a bug which 'depends on' or 'blocks' another one, this dependency must be told in two steps: 1. Enter the bug and commit it 2. Change the bug and enter the dependencies It would be nice when the dependencies can be entered in step 1 already (else 2 mails instead of 1 will be sent). When using the 'Change several bugs at once' option, the dependency-field is missing also and it would be nice when it would be added there.
Red Hat's current Bugzilla version is 2.18. I am moving all older open bugs to this version. Any bugs against the older versions will need to be verified that they are still bugs. This will help me also to sort them better.