Okay, this is one of the weirdest electrical problems i've ever experienced. When writing to an i2c FRAM chip (FM32256 from Ramtron), on a number of random locations (4,20,68,84,100,116,132,148,164,196,212,228,244 - in the first 255 locations), the 5th bit (2^5=32) is stuck at 0. I noticed it...