Here's a Greasemonkey script I wrote. It might eat your dog. More will appear at some point.
Termite Misdirection (version 2.1)

I really hate that submitting or updating a bug on Bugzilla leaves you at
post_bug.cgi or process_bug.cgi, and mashing refresh wants to
resubmit. Bugzilla should really redirect itself, but here's a user script to do
this ourselves.
Happily, Bugzilla 4.2 will make this script unnecessary.
Testimonials
i have an image of you on a shrine at the end of my bed, which I worship nightly, as a result of Termite Misdirection
My hero ! Termite Misdirection made my day, thanks a lot
Lovin' it! Good to know I'm not the only one lacking a redirect there
New in version 2.2
- Termite Misdirection doesn't use the HTML5 history API any more, because this didn't have any effect on the URL used when you hit refresh.
New in version 2.1
- Termite Misdirection should now work on plain
httpBugzilla installations (rather than just onhttpsinstallations).
New in version 2.0
- Termite Misdirection now uses the HTML5 history API (if supported) to modify the URL in place without actually reloading the page.
