BAD_SEED's questions

I'm provisioning an Ubuntu server with a shell script, for definition a provisioning script should be replicable and idempotent (every time I execute the command it should always act the same). Thus I need to clearly define a package's version. In my case, I want to install cURL 7.22.0, so I've tried:

apt-get install curl=7.22.0

but this doesn't work since the version doesn't exist. So i've checked for specific version in my package's cache with apt-cache madison curl:

curl | 7.22.0-3ubuntu4.14 | http://us.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
curl | 7.22.0-3ubuntu4.14 | http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages
curl | 7.22.0-3ubuntu4 | http://us.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
curl | 7.22.0-3ubuntu4 | http://us.archive.ubuntu.com/ubuntu/ precise/main Sources
curl | 7.22.0-3ubuntu4.14 | http://us.archive.ubuntu.com/ubuntu/ precise-updates/main Sources
curl | 7.22.0-3ubuntu4.14 | http://security.ubuntu.com/ubuntu/ precise-security/main Sources

and I've thought that:

apt-get install curl=7.22.0-3ubuntu4.14

was a smart solution, but alas, after apt-get update that package disappered and 7.22.0-3ubuntu4.15 come to life, and so the provisioning script doesn't work anymore.

As you can imagine this script is too fragile and completly unusefull. How can I avoid this nasty surprise?

I installed Ubuntu 12.10, then installed Nemo. Now I would like to make Nemo the default file manager. I've searched the web for a solution but every time I restart my computer Nautilus come back.

Does anyone know an effective solution?

I have seen this theme, I installed it, but it still looks pretty different from the promises (look at the picture). As you can see my result (on the right) is pretty different from promised version (on the left). Does someone ever tried with a real success this themes and how?