Huh, stayed DLH but longest security line I had was at GCH on a Sat evening going into DtD, about 15 mins. The DLH back into DtD was about 10.
There are a couple threads on this right now, to me the common things are:
-Harbor entrance is the worst. Hands down. There was a report of a 45(!) min wait a week or two ago.
-Time of day is huge. I did a weekend visit staying DLH with 7am EMHs and waited less than 5 mins at security every morning around 7:10am. Other people on the boards who had 9am EMH reported long lines from DLH into DtD. Time of day is very important otherwise you aren't comparing apples to apples.