My wife and i are having a problem in a customers home that we are painting. This home was built in 76 and i dont beleive it has been painted since. The paint/drywall had cracks everywhere from age and settling so i have been going through making the repairs before painting. The problem my wife is having is when she is cutting in the corners and then painting the corners appear to be soaking up the paint and are now rippling. These are corners i have not repaired and appeared to be fine from the get go. I took a couple pics and will post them. Thanks for your help.