Thinslacko 5.3.3 and 5.5 have kernels 3. 5.5 kernel panics.
Lupumini 5.2.8.6 and Lupu 5.40 use kernel 2.6.32 and take up only 30MB of RAM
after subtracting cache and buffers. They are about 122-130MB sfs files.
Lupumini comes with two sfs files (one zdrv) to reduce RAM usage but the
slightly larger 5.40 uses no more RAM to load into. On this PIII I cannot
get it to save to a savefile. I tried repeatedly. Saves file on a 2008 netbook.
Lupu 5.2.8.6 mini is therefore my best choice for the PIII 500MHz laptop.
Puppy 4.3.1 does a 10 min filecheck, and wary has no sound.
Arcade Puppy based on Puppy Akita 4.2.0 works but no wifi support.
The older puppies work better with low RAM and older hardware than thinslacko,
which I doubt was actually tested on a PIII by the author. Wrong kernel.
I got smtube working at 360 - copy or link to libQt libraries and copy
cacert.pem to /usr/local/ssl. I posted all the requisites at
http://keesan.freeshell.org/puppy/smtube. Lupu comes with mplayer
that works. Thinslacko does not, but on a 'new' (2008) netbook it
works with a 9MB mplayer2.
Palemoon won't work on a PIII (no SSe2). Firefox 24 will. Slow load.
Memory usage goes to about 256MB with 18MB buffers and 4MB free.
That is pushing it. Opera (or links or lynx) are preferable. Dillo is fast.
I use a 384MB swap file with 256MB RAM and 6GB very slow clunky hard drive.
I kill cupsd, everything in the tray.
On some PIII's wary works where lupu does not.