Pdaxrom Builder Make -j2 World, stops inbetween packages Options

[realm]

i got finished my first sucessful build of pdaxom svn yesterday

now i'm trying to shorten the total build time so i can try out some other settings and options. i'm building on a dual athon mp 2600 with a gig of ram.

i've just tried make -j2 world so make will compile 2 objects/executables at a time instead of one, but after it builds a few packages it just drops me to a shell, then if a type it again it picks up where it left off, no error messages or anything. it feels like maybe some make files are cleaning up how they end or something, i haven't really worked with anything makefile based before though, and don't know if this is a known issue. any information would be useful

thanks in advance.