I use flashgot with the latest official firefox version for windows. I'm only using flashgot with fdm (free download manager) and the browser built in download manager.
Now, even though i never installed jdownloader on my system (vista sp2 ultimate 32), at the drop down and right click flahsgot context menu options, i also see jdownloader and even though i tried some about:config tweaks i read somewhere, i just can't get rid of it

I uninstalled and reinstalled flashgot, but nothing, i always get this jdownloader option.
Why, and how can i finally get rid of it

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.10) Gecko/2009042316 Firefox/3.0.10 (.NET CLR 3.5.30729)