Disclaimer: I didn't read all of Revvy's link, so I don't know if this info is listed here, but part of head development is the state of the glassware (both bottle and pint glass). Stuff like Jet Dry ruins the head retention of glasses and bottles. I try to handwash my pint glasses and I never run my bottles through the dishwasher (or dishwasher "requires" Jet Dry).
Thoroughly clean your glasses with hot soapy water, and them rinse them VERY well. May not fix your problem, but could help out a little at least!