I just let Fx do the upgrade to 3.6.17. '''All '''my search plugins are missing from the search engine list. All my functions in the list are greyed out, including "restore defaults". I added the firefox help search to the list, but I can not delete it (remove is greyed out). I already tried renaming the search.sqlite file. No change. Tried to disable all extensions, no change. Anyone know how to restore the search list and manager? Or maybe undo the upgrade?