I can't say I've noticed anything weird about the dice rolls. I do miss a lot, but that makes sense, since I often only have like a 55% or 65% chance to hit. If anything, it feels like I'm hitting a lot of DC10 ability checks - but that could just be a biased feeling because you then add all your bonuses to the roll, and therefore pass far more than 50% of DC10 rolls.
A DC10 attack roll...which mathematically works out to be a 50-50 chance, ends up missing 5 times in a row, sometimes more. Can't say i feel bad about scum loading.
Hitting 9 or less 5 times in a row is a 1 in 54 chance my dude. It will happen.