Yeah, I think I'm slowly beginning to think in the context on how to keep my BTC safe (I hope that made any sense, english isn't my first language )

I was thinking of using my old netbook I don't use at all (because it was too slow for my purposes), install Ubuntu on it and create my savings wallet there. Now I thought of something (I'm probably not the first) so I'd appreciate it if you (or anybody else) may give me some feedback on that thought:

I make a completely clean installation of Ubuntu on that netbook. I only once let it connect to the internet to install all current needed updates and the Bitcoin Client. As soon as that's finished I completely disconnect it from the internet and generate a few addresses which I write down on my PC on which I use my every-day-wallet. I either use that every-day-wallet or the addresses of the savings-wallet directly to store my "savings-BTC".
Now if in some point in time I want to withdraw something from my savings-wallet, I first transfer everything from my every-day-wallet to the savings-wallet. Then I turn on the netbook, take a completely clean USB-stick (or any other medium), move the savings-wallet on that medium and repeat the first step (create a new wallet on the netbook and write down the addresses). Then copy the old savings-wallet on my PC and transfer the remainder of the BTC (if I only want to withdraw a certain amount) to the new savings wallet.

Although... now that I read it, it doesn't seem as safe as I first thought it was >.>