@bankara you mentioned earlier that you use a netbook occasionally for editing when you're on the road. how does lightroom perform on that machine? I'm currently more or less stuck with a netbook as my main computer, and the RAW processing program that came with my digital is nightmarishly slow to use on this box, and doesn't allow me to really do what I need to do anyway. I'd like to know how slow it's going to be before I go off spending good money on the software, and netbook specs are pretty uniform, so what you see is likely to be a good indicator of any issues I might run into.
It was pretty sluggish but the ability to edit on the fly was priceless for me. No fancy MacBook Air can I afford so a crappy HP210 bought off the back of a truck (scooter actually) in India is what I ended up with. Still for 200 bucks the ability to create catalogs and do basic editing as well as back up my work to an external HD was totally worth the sometimes sluggish performance. I would only really recommend it if you are going to be on the road for a very long time (think months) and don't want to resort to editing all of your work in internet cafes. My specs were 1GB RAM and a crappy atom processor so the first thing I did was strip out the OS and put Windows 7 Ultimate edition on it. In hindsight, XP would have used the resources more efficiently and would have given me less grief. It would choke a little bit but it really worked fine and the battery life was amazing on those 30 hours train rides so I could write, watch movies, and edit my work. It actually runs lightroom pretty well but I atribute that to the fact that it is a well designed program. Hope this helps somewhat.
Glad to be of service! I have since dumped a 2GB RAM card into it to try to improve performance and haven't seen much of a difference. However, I did make a hackbook a while back out of a Lenovo 10e and it ran OSX like a champ! The next best thing to a MacBook Air, at a 5th of the cost. Runs LR great, everything works fine except the internal mike. Installation was a breeze, but i have done this a few times. The problem is that you have buy an older model to get it to run OSX but since the specs have not really changed all that much in netbooks it isn't an issue.