Comment 16 for bug 435917

I think my problem was related with samba mounts, there was a reported bug on https://bugs.launchpad.net/bugs/455122 about problems compiling on samba mounted resources.

Solving that problem (mounting with "noserverino" option) seems to have also solved the "scheduling while atomic" problem (I have to test it more thoroughly, but what freezed the machine before doesn't block it now).