SOPC Builder clock domain crossing

My Quartus (and SOPC Builder) is Version 5.2, Build 156 :-(.

I read nothing about clock domain crossing is an unsupported fetures in the readme file.

Anyway, I downloaded the 4.2 as web edition from the Altera homepage appr. 12|11|2004, but run it as licensed one. May this influence the behaviour?

Sure, I hope the clock domain crossing feature will boost performance, now we're about 88MHz with a Cyclone 1C12C324-7 and expect to get the 100MHz +.

Earlier I thought of braking up my NIOS system into two independent Avalon Busses, a slow one with the NIOS inside and a fast one, just connecting to one SRAM bank and the user logic, but the clock domain crossing feature is exactly what we need.