That is one tab open.... to my pinafore instance.
@nathand did you have a bunch of tabs open before? I notice that Firefox isn't always good about reaping its threads after they're no longer needed.
@nathand Check in about:performance (Firefox task manager), may be a bunch of extensions is causing the issue.
Also, Firefox does the "The more Memory is used the better" reaction if someone complains about memory used :/
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