I currently run Windows 7 Home edition on my Bootcamp partition @ 20 GB in total size so I can reserve most of my space to the Mac side. The only reason I use Windows 7 is for Steam, which I currentlly run using an external hard drive so no space is taken up on my Windows partition. I also have Parallels 6.0 running on my Air and use it for work related stuff that requires Windows. My Bootcamp partition has 2.1 GB remaining (and this is without updating to Service Pack 1). Everything runs fine and is very fast on both partitions; however I am a little worried that I may fill up my drive space on Windows due to all of the updates that keep happening. How close can I get to my 20 GB capacity can I get without causing Windows to slow down and what can I do to free up more space (considering that I have no data or personal applications running on Windows 7). One more thing - I already applied the remove Hibernation trick which helped me free up another 2 GBs of space. Thanks!