ugly scrollbar on mIRC

can anyone tell me whats wrong with this?

is it the skin itself or is there some setting wrong?

#266980

wow how did you get that i want it, its kinda cool

#266981

cool? no.. not at all.. its ugly, i dunno how it got like that, just happens on mIRC, other scrollbars look good..

#266982

its the Mac OS 10.2 Jaguar skin

#266984