It varies. Req3 can be a second, then Req4 another twenty, or Req4 and Req5 can be a second and then a killer.
And now I have a meta-concern: Arc's poster boy is the web thingy and in going on a day yours (thx!) is the only response on it being effectively unusable. Whassup with that? I was looking forward to doing a kickass integration of Cells and Arc's webbery. :(
I gave up (temporarily) on running Arc's web server under Windows, due to various problems (http://arclanguage.org/item?id=1531). My impression is that Windows support is "immature", based on the (system "some Unix command") scattered through the code.
