xulrunner-1.9 high CPU load?

Is anyone else noticing that xulrunner-1.9 is using > 80% CPU, by just opening Conkeror?

I thought that maybe it was to do with the "flashplugin-nonfree" and so removed it.
But still, just opening Conkeror... 53, 83, 85; then just hitting "g" puts it up to 89.
 

Linux version 2.6.26-2-686 (Debian 4.1.2-25)

conkeror   0.9~git090223-1
xulrunner-1.9   1.9.0.7-1


'Mash
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