Is there a better way to report the bug than just use the built-in crash reporter? I still get super sporadic crashes, I think it has to do with having too many tabs loaded.
Another interesting thing you can do: click through from about:crashes to your crash report. Then click the "more reports" link. You can see if your crash signature is rare or if you have one of the currently "popular" ones. If a lot of other people are crashing with that same signature, there is probably a bug and developers are probably discussing it. Again the most useful thing you can do is figuring out how to make that crash happen consistently and adding steps to reproduce it to its bug.
If that's the case try using 64 bit builds.