Problem with POI lookup

[Magus]

Many POIs cannot be looked up on the web interface, they result in an error and random comments from other POIs.

Small list I've run into that do not work, when trying to correct them:

Duplicates:
76
696
755
1019
1054
1824
1970
20116

Invalid clusters:
20536
20568
20577

Wrong location:
15808