Hey guys, I've got a computer an Athlon 64 3200+, 512MB RAM and a Radeon x800 XT. The problem is, its install of Ubuntu has been running very slow as of late, starts randomly doing "weird" things, and constantly thrashes the hard drive. Sometimes rebooting it will make it better for a while, but it will go right back to where it was quite quickly.
CPU usage is not excessive, and it barely even uses half of the available memory. I have no idea what is wrong with this thing.