The memory thingy is probably due to your /var/cache/apt/archives being full. Either run "apt-get clean" or raise the limit in apt.conf. Then run "dselect update" again.
markus@mrk-fujibox:~$ cat /etc/apt/apt.conf
APT:efault-Release "unstable";
APT::Cache-Limit 10000000;
Apt::Get::Purge;

BTW, with repos I meant repositories.