Note that we have done some benchmarks on the real filesystem performance
for different media and filesystem http://talk.maemo.org/showpost.php?p...2&postcount=76
The NAND results are the best case scenario, as only a highly compressable stream is written.
Real life scenarios may be much worse and are on my todo list.

You can also find my ideas for a "full optification" solution on
http://wiki.maemo.org/User:Tanner#full_optification