If one watches Firefox's CPU consumption, one can see it consuming large amounts of CPU even while it's not being interacted with. On lower-spec computers, this can cause performance problems that significantly affect other applications.
Is there any way to find out what Firefox is actually doing, so one can try and change some configuration options to reduce its CPU consumption?
It's common knowledge that addons can affect performance, but the install/uninstall dance isn't exactly efficient. Does anyone have a better method for finding something that could point towards what might be causing these issues without having to search behind the couch?