I'vd got a little(BIG?) problem with YAF 1.9.1 through 1.9.4 RC1

our YAF it's long long time response when had many Pages in Topic (50+ pages).

and sometime make YAF error with time out reason.

while YAF wait for pages response,

i'm found our w3wp.exe process are Cursed.

(sometime it's 99% CPU utilize)

yes,i'm tried with High power Server.

it's not time out ,but just more waiting.

please shared with me for solution or any fine tuned.

Thx,