With more than 2 google docs open at a time? Because if that is so than that's great!
Google docs will run on practically any computer.
I don't know why people think that MBAs are underpowered...
The MBA is more powerful than most notebooks that people own right now (I'm not talking about brand new models). Do you realize that the majority of notebooks didn't even have 1GB of standard memory up until about a few years ago and was running a single core processor? The MBA is a dual core and has 2GB, more than sufficient to do pretty much anything, except professional work like video processing/editing (and only a handful of machines can do this smoothly, even now). Don't even get me started with the HD space... 40GB was considered large on a notebook not too long ago. 80GB was the "Wow" size.
So take comfort knowing that you can probably do 100% of the stuff you want to do without any issues... Either that, or carry a notebook twice as heavy or 100 times uglier than the MBA.
You can buy a mighty machine for the same price(not mac), that can do everything, but it's going to be heavy, clunky and probably unsophisticated. You have to consider that there has to be a balance... You wouldn't take a backpack full of food for a day trek, would you?
I'm not saying that you think like this... I just think that all the weirdos out there fed you this misconception because of the MBA's size.