That is true actually, but slowness in general is what annoys me most. Things like slow boot times and long waits for stuff to open is what annoys me the most. I guess if you're prepared for it you'll be OK.A lot of people say that. Once you look at it though, and don't expect miracles, it is not that bad. The hard drive is the main limit to these old systems. Even a 7200 RPM will get no real improvement due to ATA66 interface (8.25MB/s max burst rate).
For basic things, like surfing the net, doing office work, and talking to people on facebook, it is no better than my desktop at doing. Would probably run an older game too if I wanted to dig one up to play.