Settling into Ubuntu

A month ago or so, I switched over to the unix based Ubuntu operating system.
Ubuntu definately has its advanatges and disadvantages. A quick rundown of positives and negatives as I've seen them.

• Free. Did I mention Ubuntu is free? As is most of the software that runs on it? It's all open source so people make software for it in a variety of categories. I can use Google docs with it when I am online, and it also comes with Sun microsystems OpenOffice, which is a free office suite which is backwards and forwards compatable with Microsoft's office documents.
• Simplicity with customization. The graphic user interface is pretty clean with Ubuntu, and you can move things around, add buttons to make the computer do different things, change how it shows windows. You can create numerous desktop views to switch between or use the typical minimize to the taskbar option as well. Because the software is open source, I can actually go in and edit the source code with little difficulty (if I know what I'm doing, and if not, there's the next point).
• Online community. I guess this is similar to the early Mac user groups, but there's a ton of resources online about how to use Ubuntu and getting it to do what you want to do. Its very simple to simply google a question like "how do I install SketchUp in Ubuntu" and get some useful answers. 
• Security. I am not running a firewall or virus scanning software because basically there are no viruses or malware that target ubuntu in the wild. 
• Native printer setup. You can pretty much plug any printer into a computer running Ubuntu and print from it immediately without having to load drivers. This is kind of a nice feature, and I don't really understand why other operating systems can't do this.

The two main disadvantages that I've come across are basically unfamiliarity- you have to learn new operating system (albeit a simple one), and program compatability. Some software you're used to using is available for Ubuntu, some of it is not.