Docedison,
first of all, thank you very much for your remarks. I did try to put my best at doing it.
I really like my 60/40 solder. Easy to work with, and I work with in 5ft away from a very large window, so I don't get to inhale any of the hazzardous fumes.
About the crystal, I wasn't aware of that and your suggestion is very welcome. I'll make that change.
Why the phenolic material: they are a lot cheaper and a lot more available than everything else here in Brasil. Only recently I started buying fiberglass single and double-sided blank PCBs from DealExtreme, but the problem is that I still have lots of the phenolic blank PCBs. About FR4, I have never even seem tham available in the usual stores in Brazil. Things in the electronics hobby in Brazil are either very expensive or impossible to come by. I'll still make some stuff with phenolic PCBs because if I make a mistake, it is cheap enough for me not to worry about the cost of the mistake. The upside of working with cheap stuff is that I can experiment more, try new things, and not be worried about the costs.
I am currently working on a Atmega328-based board that will stay in my car. that board will be made of fiberglass, and I'll be taking care when working with them.
Once again, thanks for your kind remarks!