@Vilters: I know what the causes are :). Just cross 1 direct light with raytraced shadows with 300.000 hairs with 20 verts/hair and all those 6 million elements are considered in the reaytraced shadowing. No, it did not crash but required 6Gb ram and 45 min patience.

@noobs:

 - be aware of the size of a Dynamic Hair object / result, and its consequences for raytracing (shadowing, reflection, IDL, ...)

 - render blocks are issued when the first one is available. So when 1234 are processed and nr 2 takes a lot of time, you won't see 3 and 4 on the screen. In the meantime, the renderer is working on 567 etc. The moment block 2 is ready, all 234567 will be issued to the screen. So, to know whether the renderer is busy or crashed, consult the CPU load via Taskmanager or so.

- - - - - 

Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though