Hello ! At the beginning I must say I'm a 100% Windows user now. It may change, but I still need Windows 7 on MBA for sure. I'm going to buy 11.6"/4/128. The question is, how much space lion takes after some time? I was thinking about 20 GB for Lion, and 100 GB for Windows. If I clean up the Lion install, it should be much less then 10 GB of space used, right ?