It took me a few tries to get a good burn on Damn Small Linux 4.3. Once I did, it worked great on my Dell Optiplex GX 520. It also performed flawlessly on my VIA C3 test box.
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DSL 4.3 did load and run on the Compaq, but for some reason the desktop wallpaper did not appear. I've been running DSL 4.0 on the Compaq, and that does X perfectly, along with the desktop design. I don't know what's wrong with the 4.3 configuration, but it does make the screen look rather gray, also the machine status information unreadable on the upper right side of the screen.