I personally had 3 distinct issues with swallowing:
1. Could not initiate it, with either hard food or liquid just staying in my mouth
2. After swallowing, hard food would stay somewhere very high in my esophagus (at least that's how it felt), and I needed additional swallowing to get it down
3. After swallowing, liquid would partially go to my nose and cause a burning sensation there
These symptoms were very acute in Nov-Dec 2006, on and off for a couple of weeks. Nowdays, I sometimes still have #1, and on very rare occasions #2.