The JOSM restart plugin does not work if you are using Linux and you have a Nvidia Optimus graphics card and you have Bumblebee installed and you are using the command “optirun josm” to run JOSM using the Nvidia graphics card instead of your Intel graphics card

It will work again if you just us the command “josm” to run JOSM

PS while I’m still using the my Nvidia graphics card to run JOSM I’m really not sure if it’s helping rendering the maps or the images from Bing any faster than it would if I was using the Intel graphics card that is integrated into my Intel Sandy Bridge Core i7 CPU