Open Source Data Logger Project Using the Arduino?

Just a couple of words to keep you updated. Version 19 is under test. This version includes runs listing, runs printing (selectable), deletion, online help, test mode, upload mode, real time clock (bloody timer roll over >:( ). But! I cannot shorten the cycle time below 40ms, due writing cycle time (I was looking for 10ms). May be I am a little too ambitious for waht is not a scope, right?
Next development steps are: self probe type recognition, and bulletproof microcode.