I hate to say this but after installing Ubuntu on a 1.8 GHz PC with 256 MB RAM, I found it to be slower than Windows 2000. Here is my experience.

The boot-up sequence takes almost 1.5-2 times longer than Windows 2000. In case of power failure, which is not uncommon here, Windows recovers much better (after manadatory chkdsk) than Ubuntu. It simply forced me to re-install both times. That is clearly not acceptable.

It did recognize the system well and installed itself correctly. But it appeared to lack in performance, at least in the UI.

I couldn't play mp3 files or mpeg movies. Due to some copyright restrictions such players are not installed by default.

The ability to recognize Windows systems and drives in the network is a big plus.

I had great hopes for Ubuntu but so far I think, either I am missing something big which I doubt or else Ubuntu needs some fine-tuning.

Note: I am not using the latest release but the one before that. I always confuse the names like Warty Whatever or Hoary Whatever and which of them is the later version, so don't ask me the name.