It could be, but I don't think it's my humi because this was how they came straight out of the box(just got them with 5 years of age prior), all of them are so firm to the touch, just way too overfilled IMHO, but then again I'm only half way through the box, fingers crossed the other half have some redeeming qualities... :s
Also on a side note, are cracked wrappers caused by too much humidity, too little, or just extreme fluctuations?