I've been wearing this model and size for the past 10 years, but I think that Levi's has changed their sizing standards.  These jeans are much larger than my previous jeans by about 1-2 inches in the waist, rear and legs.  They look too baggy on me right now, so I might have to wash and dry a few times hoping they'll shrink a bit.  Perhaps Levi's is beginning to do for men's clothing what women have seen with their sizing.  Keep the same size printed, but make the clothing slightly bigger to allow for weight gains as people age, but allow them to still feel as though they're the same size.