Max/MSP - mutliple serial read

hej,

i experienced some glitches (value will jump to zero) while constantly reading the serial data with serial object in max/msp??! do you have any clue? and which metro-time do you use for banging the serial object?

meanwhile, i downloaded the code-sniplet by David Cuartielles, but i couldnt open it, neiter as text, nor as patch? does it contain errors? i´m using max 4.5.4?