I've set my Spotlight preferences to ignore my Time Machine drive, yet it insists on searching it anyways...I can hear the TM drive spool up everytime I use Spotlight (the TM drive is an external, very obvious when this happens due to noise)...also, Spotlight went so far as to tie up lots of CPU cycles indexing my TM drive...ALL of this happening with my TM drive excluded according to Time Machine preferences 
Any insight would be much appreciated!
Any insight would be much appreciated!