Currently there is no GUI option to turn on subpixel font rendering or smoothing in Lubuntu 10.04. But don't lose hope, we always have the terminal. Just follow these easy steps:
2. Go to "Accessories" and click "LXTerminal";
3. In the terminal, type this command: sudo nano ~/.Xresources then press Enter;
4. Copy and paste the following:
Xft.dpi: 96.0
Xft.hinting: true
Xft.hintstyle: hintslight
Xft.antialias: true
Xft.rgba: rgb
5. Press CTRL+X;
6. Press Y then Enter;
7. Restart your system.