Default Extension 1.0 - Reinstalling when starting Firefox

Found an interesting Firefox add-on called Default Extension 1.0 that reinstalls itself when starting Firefox.

Solved the problem by uninstalling all unwanted softwares listed in the Add/Remove programs dialog. That is PicRec (x86), Remote Desktop Access VuuPC, Search Protect, My Program version 1.5, MaxiGet Software Manager and Safer-Surf.