I just got an extra 512 MB of memory in the post, enough to bulk up my computer to the point where I can run a copy of Windows 2000 inside an Innotek VirtualBox environment in my install of Ubuntu (7.04, holding off on 7.10 until it gets a few more weeks of bugfixing). And I'm very happy indeed! I'm installing Windows 2000 into the environment as I write, and although processor load is high, Ubuntu is still incredibly responsive at load levels that would have my native Windows 2000 installation gasping to load the Programs Manager. And the volume buttons on my Logitech internet keyboard were instantly recognized and respond immediately to my keypresses. In my Windows installation, with the original Logitech program installed, it would sometimes take a minute for the system's sound to respond, with consequent frustration when it responded to several presses all at once, and made the sound too low to hear, or too loud to bear.
Now that the installation's complete and rebooted, processor load is around 60% and memory usage about 700 MB - both very acceptable, and of course, only relevant when VirtualBox is running. When I want to rip/burn CDs, or do something really computational, I can close the program, and watch my load/usage plummet. If it carries on working out like this, I shall soon be deleting the orphan Windows 2000 installation on my C:\ drive, and going purely Ubuntu.
Further edit: Windows feels like it's faster running in VirtualBox than it was natively....
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