I don't have much experience with portage, something on the lines of like 2 days.
Code:
[blocks B ] sys-apps/mktemp (is blocking sys-apps/coreutils-6.10-r2)
[blocks B ] >=sys-apps/coreutils-6.10 (is blocking sys-apps/mktemp-1.5)
[blocks B ] <sys-apps/util-linux-2.13 (is blocking sys-apps/coreutils-6.10-r2)
Indicates that something is wrong with your dependencies.
sounds like sys-apps/util-linux-2.13 needs to be upgraded,
then you should....
I
think install iwlwifi again and hopefully the other stuff should upgrade by itself....