Bolbit: I installed MySQL 3.22.32-2, I can't remember if I had to tweak something to get it to work, try searching the forums. I don't know about Cacko.
Baallrog: Yeah, I'm a little concerned about the flash RAM, apparently one can move the MySQL data directory to a card with symbolic links. You can also start MySQL with a command line option to use a specific data directory. One of those is the next step. This isn't production, and I'm not doing heavy writing/mods, so I'm not too worried.
I am more concerned with the apache htdocs directory, where I am modifying the documents a lot. I tried to symlink it to the SD card, even set permissions and ownership, but it didn't work. Still working on that.