HASTE bug in WOTLK?

[appaking]

so ive been going from 0 haste to 1094 haste,

now my question is what are the haste hard cap and soft cap? and why?


the following testing is shown here

vt
0 haste 5 ticks (15sec duration)
1094 haste 5 ticks (11sec duration)

dp
0 haste 9 ticks (24sec duration)
1094 haste 9 ticks (18sec duration)

swp
0 haste 6 ticks (18sec duration)
1094 haste 6 ticks (18sec duration)

renew
0 haste 5 ticks (15sec duration)
1094 haste 5 ticks (15sec duration)
---------------------------------------------------------
mind flay
0 haste 3.00sec
1094 haste 2.25sec

mind blast
0 haste 1.50sec
1094 haste 1.13sec

vampiric touch
0 haste 1.50sec
1094 haste 1.13sec


does anyone know if haste scales linear to the % haste shown in character info or nah?
and how much haste one needs to get like 40% or 50%