[8.950012] Endpoints errors

I have no clue about the consequences yet. I just noticed these messages in my logs. Perhaps this is a problem or a bug.

2012:05:11-14:12:11 snake-jailbird-2 postgres[10709]: [2-1] ERROR: Slony-I: Table endpoints is replicated and cannot be modified on a subscriber node - role=0
2012:05:11-14:12:11 snake-jailbird-2 postgres[10709]: [2-2] STATEMENT: UPDATE endpoints SET endpoint_type = $1
2012:05:11-14:12:17 snake-jailbird-2 postgres[10710]: [2-1] ERROR: Slony-I: Table endpoints is replicated and cannot be modified on a subscriber node - role=0
2012:05:11-14:12:17 snake-jailbird-2 postgres[10710]: [2-2] STATEMENT: UPDATE endpoints SET endpoint_type = $1
2012:05:11-14:12:22 snake-jailbird-2 postgres[10712]: [2-1] ERROR: Slony-I: Table endpoints is replicated and cannot be modified on a subscriber node - role=0
2012:05:11-14:12:22 snake-jailbird-2 postgres[10712]: [2-2] STATEMENT: UPDATE endpoints SET endpoint_type = $1