The “Report a Bug” link on Blender’s Development page does not work in Firefox. I can get around it with Internet Explorer, but when I sign up to submit bugs, the activation email never arrives, even when I have it resent. Is this just me or what?
Edit: That particular link has been fixed, and I got a new reactivation email by registering a new account. There’s more to be fixed, though.
I managed to get bugtracker access by re-registering under a different name-- this time it sent the activation email right away.
If you want to report bugs, try this:
Go to http://projects.blender.org , log in
Then the “submit Blender 2.6x bugs” link (http://projects.blender.org/tracker/?func=add&group_id=9&atid=498)
(Unfortunately you can’t browse other bugs this way, so you might end up submitting a duplicate.)
EDIT: After I logged out, I could browse the other bugs-- oh wait it stopped working 
And from then on you can go to My Page -> Submitted Artifacts to see your open submitted bug reports.
I’m gonna submit a few bugs about the bugtracker itself and see if that helps.
Edit: Bug submitted at http://projects.blender.org/tracker/index.php?func=detail&aid=31086&group_id=8&atid=121
If you can, please add related comments about your recent bugtracker mishaps.