It's alriight: a night in the realms of a nebulous dreamworld have resolved my issues. The mysterious 'other factor' was probably 'Infectonator: World Domination' on
Newgrounds (a flash site with games and music and movies and a slithering landslide of shite if you look through the wrong portals).
Normal service is resumed:
caveat: a warning or cautionary advice. Leads to the use of 'Cave*, chaps!' by schoolboys in the fifties,
halcyon: hopefully the source of an excellent pun by esteemed board member Halcigone. I can't be arsed to google it right now but I think it's an archaic name for 'kingfisher' and means those rosy-tinted days of yore,
coruscant: having occasional flashes or points of brilliant light. Also 'a planet in the real Star Wars universe'. Uuuffff....
*Ahem. Pretend I didn't edit this post. It's pronounced 'cave-eeee!'.