Casting haste on a person wearing boots of speed results in that character moving at 4x their normal speed (or so it seems).
Tested via 2 mages with haste prepared.
Mage A wears boots, and competes with Mage B, mage A runs faster (normal haste speed)
Mage B casts haste on self while mage A stands far away to not be affected, the two tie in terms of speed
Mage A then casts haste on himself and becomes speedy gonzales, just zipping across the map at amazing speeds.
Also, APR on my charname is 4 without boots, 4 with boots, and 5 with boots AND haste.
Can someone verify if this bug exists in vanilla? I have some mods installed