Comment 1 for bug 447100

As far as we can tell, this is due to the fact that snapshot() takes a copy of all the properties of an object. In the case of a BugTracker, this includes all of its bug watches, and in the case of, say, Gnome Bugzilla, this means 13,000+ bug watches are getting copied.

This isn't something that we can fix for 3.1.12, so I'm unmilestoning and unassigining it. I'm also opening a Foundations task for it, because the Foundations team might be better placed to fix the problem than the bug team.