Huh, well this could probably be blank, I think the title sums it all up nicely, but for the sake of clarity a simple yes/no for the following will suffice- Do you want our system specs (and if so, how detailed)? Do you want the build number we were using? Do you want a description of what was happening when we encountered the bug? If we have been able to, do you want us to describe how we've recreated the bug? Do we need to include if we were using a custom class or not (if yes, does that include our top secret endorsement load out)
The more information you can provide the better. Never assume some piece of data is unrelated. Well, we don't need to know what color shoes you were wearing when the bug occurred, but you get my point.