I used to have the Spell Check facility in Thunderbird working nicely for a long time. It is no longer working for a weeks now.
I find that the "Spell Check As You Type" option --along with a check mark for selecting that option which IS there-- has been "grayed out"!
I updated my Thunderbird to its latest 15.0 version five weeks ago. I just wonder whether version 15.0 has introduced the above graying out problem.
I shall highly appreciate help in getting my Spell Check option restored.