I recently started using Firefox & Blank Canvas with my gmail account and LOVE it.  I've encountered a problem after a few months in that my Blank Canvas signature has disappeared.  Honestly, I had issues getting it to show up in gmail in the first place and stumbled on to it working.  I can't figure out how to restore it now.  I've even uninstalled Blank Canvas and reinstalled it to no avail.  When I hit compose mail the options aren't there for my signature any longer?  HELP!!!