Corrected entry: In this episode, as Clark and his parents are first discussing his new weaknesses, the school bus stops directly in front of his farm. In every other episode, Clark, Pete, and Chloe have to walk together quite a distance to reach the bus stop where they all get on.
Corrected entry: When Clark realises Eric might have aweakness to Kryptonite he goes to get a meteor rock. His mum says "it's not like we have them lying around" so he goes to get the one off Lana's necklace. This would be fine except at the beginning of the episode and throughout most if not all the others it is well established that there are always meteor rocks lying around on the ground, in the water, in fact pretty much anywhere you look.